﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2023v5.1" xsi:schemaLocation="http://www.irs.gov/efile">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-10-23T13:40:34-07:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>474152589</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>IL NFP AUDIT AND TAX LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>200 S WACKER DR SUITE 3100</AddressLine1Txt>
        <CityNm>CHICAGO</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>60606</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>363703699</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>The Chicago Athenaeum The Center for</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>Architecture Art &amp; Urban Studies</BusinessNameLine2Txt>
      </BusinessName>
      <BusinessNameControlTxt>CHIC</BusinessNameControlTxt>
      <PhoneNum>8157774444</PhoneNum>
      <USAddress>
        <AddressLine1Txt>601 S Prospect St</AddressLine1Txt>
        <CityNm>Galena</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>61036</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Christian K Narkiewicz Laine</PersonNm>
      <PersonTitleTxt>President &amp; CEO</PersonTitleTxt>
      <SignatureDt>2024-10-23</SignatureDt>
      <DiscussWithPaidPreparerInd>true</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>Alfredo Rodriguez CPA</PreparerPersonNm>
      <PTIN>P00958317</PTIN>
      <PhoneNum>3129985500</PhoneNum>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2024-10-15 13:58:12Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="6">
    <IRS990 documentId="IRS990" referenceDocumentId="IRS990ScheduleO" softwareId="23017517" softwareVersionNum="2023v5.1">
      <PrincipalOfficerNm>Christian K Narkiewicz Laine</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>601 S Prospect St</AddressLine1Txt>
        <CityNm>Galena</CityNm>
        <StateAbbreviationCd>IL</StateAbbreviationCd>
        <ZIPCd>61036</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>636979</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>false</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>www.chi-athenaeum.org</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1989</FormationYr>
      <LegalDomicileStateCd>IL</LegalDomicileStateCd>
      <ActivityOrMissionDesc>TO PROVIDE A MUSEUM FOR THE EDUCATION AND PROMOTION OF ARCHITECTURE AND ART FOR THE GENERAL PUBLIC.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>4</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>3</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>3</TotalEmployeeCnt>
      <TotalVolunteersCnt>3</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <CYContributionsGrantsAmt>0</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>676366</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>613423</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>5362</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>2156</CYInvestmentIncomeAmt>
      <CYOtherRevenueAmt>3271</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>681728</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>618850</CYTotalRevenueAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>219295</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>425541</CYSalariesCompEmpBnftPaidAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>350743</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>371163</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>570038</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>796704</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>111690</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>-177854</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>799247</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>621393</TotalAssetsEOYAmt>
      <TotalLiabilitiesEOYAmt>0</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>799247</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>621393</NetAssetsOrFundBalancesEOYAmt>
      <MissionDesc>TO PROVIDE A MUSEUM FOR THE EDUCATION AND PROMOTION OF ARCHITECTURE AND ART FOR THE GENERAL PUBLIC.</MissionDesc>
      <SignificantNewProgramSrvcInd>false</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>false</SignificantChangeInd>
      <ExpenseAmt>662450</ExpenseAmt>
      <RevenueAmt>613423</RevenueAmt>
      <Desc>ART COLLECTIONS/EXHIBITIONS IN GALENA ILLINOIS, SCHAUMBURG ILLINOIS, CHICAGO ILLINOIS, ATHENS GREECE FOR THE PROMOTION AND EDUCATION OF THE LATESTED AND BEST AMERICAN AND INTERNATIONAL ARCHITECTURE.</Desc>
      <TotalProgramServiceExpensesAmt>662450</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="IRS990ScheduleA">true</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd>false</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="IRS990ScheduleD">false</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="IRS990ScheduleD">false</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="IRS990ScheduleD">true</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="IRS990ScheduleD">false</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd referenceDocumentId="IRSScheduleD">false</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="IRS990ScheduleD">false</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="IRS990ScheduleD">false</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="IRS990ScheduleD">false</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="IRS990ScheduleD">false</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="IRS990ScheduleD">false</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="IRS990ScheduleD">true</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="IRS990ScheduleD">true</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="IRS990ScheduleD">false</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <ForeignOfficeInd>false</ForeignOfficeInd>
      <ForeignActivitiesInd>false</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>false</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>false</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd referenceDocumentId="IRS990ScheduleG">false</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd referenceDocumentId="IRS990ScheduleG">true</FundraisingActivitiesInd>
      <GamingActivitiesInd referenceDocumentId="IRS990ScheduleG">false</GamingActivitiesInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="IRS990ScheduleJ">true</ScheduleJRequiredInd>
      <TaxExemptBondsInd>false</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>false</PYExcessBenefitTransInd>
      <LoanOutstandingInd>false</LoanOutstandingInd>
      <GrantToRelatedPersonInd>false</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>false</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>false</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>false</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>false</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>false</DeductibleArtContributionInd>
      <TerminateOperationsInd>false</TerminateOperationsInd>
      <PartialLiquidationInd>false</PartialLiquidationInd>
      <DisregardedEntityInd>false</DisregardedEntityInd>
      <RelatedEntityInd>false</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd>false</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>true</ScheduleORequiredInd>
      <IRPDocumentCnt>1</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>true</BackupWthldComplianceInd>
      <EmployeeCnt>3</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>true</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>false</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>false</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>false</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>false</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>false</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>false</Form8282PropertyDisposedOfInd>
      <Form8282FiledCnt>0</Form8282FiledCnt>
      <RcvFndsToPayPrsnlBnftCntrctInd>false</RcvFndsToPayPrsnlBnftCntrctInd>
      <PayPremiumsPrsnlBnftCntrctInd>false</PayPremiumsPrsnlBnftCntrctInd>
      <Form8899Filedind>false</Form8899Filedind>
      <Form1098CFiledInd>false</Form1098CFiledInd>
      <IndoorTanningServicesInd>false</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>false</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>4</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>3</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>false</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>false</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>false</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>false</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>false</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>false</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>false</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>false</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>false</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>false</OfficerMailingAddressInd>
      <LocalChaptersInd>false</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>true</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>true</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>true</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>true</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>true</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>true</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>true</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>true</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>false</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>IL</StatesWhereCopyOfReturnIsFldCd>
      <OtherWebsiteInd>X</OtherWebsiteInd>
      <UponRequestInd>X</UponRequestInd>
      <OtherInd>X</OtherInd>
      <BooksInCareOfDetail>
        <PersonNm>Kieran Conlon</PersonNm>
        <PhoneNum>8157774444</PhoneNum>
        <USAddress>
          <AddressLine1Txt>601 S Prospect St</AddressLine1Txt>
          <CityNm>Galena</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>61036</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <Form990PartVIISectionAGrp>
        <PersonNm>Christian K Narkiewicz Laine</PersonNm>
        <TitleTxt>President &amp; CEO</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>190000</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KIERAN CONLON</PersonNm>
        <TitleTxt>Executive Dir.</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>120000</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Ioannis Karalias</PersonNm>
        <TitleTxt>Vice President</TitleTxt>
        <AverageHoursPerWeekRt>5.50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Helene Eidimtas</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHoursPerWeekRt>5.50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Victoria Georgouvelo</PersonNm>
        <TitleTxt>Director</TitleTxt>
        <AverageHoursPerWeekRt>5.50</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>310000</TotalReportableCompFromOrgAmt>
      <IndivRcvdGreaterThan100KCnt>2</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>true</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <CntrctRcvdGreaterThan100KCnt>0</CntrctRcvdGreaterThan100KCnt>
      <TotalContributionsAmt>0</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>LICENSING AGREEMENTS</Desc>
        <BusinessCd>712110</BusinessCd>
        <TotalRevenueColumnAmt>613423</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>613423</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>613423</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>2156</TotalRevenueColumnAmt>
        <ExclusionAmt>2156</ExclusionAmt>
      </InvestmentIncomeGrp>
      <IncmFromInvestBondProceedsGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </IncmFromInvestBondProceedsGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </RoyaltiesRevenueGrp>
      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetRentalIncomeOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetGainOrLossInvestmentsGrp>
      <FundraisingGrossIncomeAmt>21400</FundraisingGrossIncomeAmt>
      <FundraisingDirectExpensesAmt>18129</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>3271</TotalRevenueColumnAmt>
      </NetIncmFromFundraisingEvtGrp>
      <NetIncomeFromGamingGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncomeFromGamingGrp>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncomeOrLossGrp>
      <OtherRevenueTotalAmt>0</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>618850</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>613423</RelatedOrExemptFuncIncomeAmt>
        <ExclusionAmt>2156</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>0</TotalAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>0</TotalAmt>
      </GrantsToDomesticIndividualsGrp>
      <ForeignGrantsGrp>
        <TotalAmt>0</TotalAmt>
      </ForeignGrantsGrp>
      <BenefitsToMembersGrp>
        <TotalAmt>0</TotalAmt>
      </BenefitsToMembersGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>310000</TotalAmt>
        <ProgramServicesAmt>310000</ProgramServicesAmt>
      </CompCurrentOfcrDirectorsGrp>
      <CompDisqualPersonsGrp>
        <TotalAmt>0</TotalAmt>
      </CompDisqualPersonsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>76288</TotalAmt>
        <ProgramServicesAmt>37030</ProgramServicesAmt>
        <ManagementAndGeneralAmt>39258</ManagementAndGeneralAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>0</TotalAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>31744</TotalAmt>
        <ProgramServicesAmt>25395</ProgramServicesAmt>
        <ManagementAndGeneralAmt>6349</ManagementAndGeneralAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>7509</TotalAmt>
        <ProgramServicesAmt>6007</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1502</ManagementAndGeneralAmt>
      </PayrollTaxesGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForServicesProfFundraising>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesProfFundraising>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>224021</TotalAmt>
        <ProgramServicesAmt>211531</ProgramServicesAmt>
        <ManagementAndGeneralAmt>12490</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>0</TotalAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>10826</TotalAmt>
        <ManagementAndGeneralAmt>10826</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>0</TotalAmt>
      </InformationTechnologyGrp>
      <RoyaltiesGrp>
        <TotalAmt>0</TotalAmt>
      </RoyaltiesGrp>
      <OccupancyGrp>
        <TotalAmt>30385</TotalAmt>
        <ProgramServicesAmt>24000</ProgramServicesAmt>
        <ManagementAndGeneralAmt>6385</ManagementAndGeneralAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>30845</TotalAmt>
        <ProgramServicesAmt>24676</ProgramServicesAmt>
        <ManagementAndGeneralAmt>6169</ManagementAndGeneralAmt>
      </TravelGrp>
      <PymtTravelEntrtnmntPubOfclGrp>
        <TotalAmt>0</TotalAmt>
      </PymtTravelEntrtnmntPubOfclGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>0</TotalAmt>
      </ConferencesMeetingsGrp>
      <InterestGrp>
        <TotalAmt>0</TotalAmt>
      </InterestGrp>
      <PaymentsToAffiliatesGrp>
        <TotalAmt>0</TotalAmt>
      </PaymentsToAffiliatesGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>0</TotalAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>13101</TotalAmt>
        <ManagementAndGeneralAmt>13101</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>BANK AND CREDIT CARD FEES</Desc>
        <TotalAmt>18397</TotalAmt>
        <ManagementAndGeneralAmt>18397</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Vehicle Lease</Desc>
        <TotalAmt>17910</TotalAmt>
        <ManagementAndGeneralAmt>17910</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Exhibition Costs</Desc>
        <TotalAmt>10376</TotalAmt>
        <ProgramServicesAmt>10376</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>PROPERTY TAXES</Desc>
        <TotalAmt>9335</TotalAmt>
        <ProgramServicesAmt>7468</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1867</ManagementAndGeneralAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>5967</TotalAmt>
        <ProgramServicesAmt>5967</ProgramServicesAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>796704</TotalAmt>
        <ProgramServicesAmt>662450</ProgramServicesAmt>
        <ManagementAndGeneralAmt>134254</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <EOYAmt>0</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>799247</BOYAmt>
        <EOYAmt>621393</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
        <EOYAmt>0</EOYAmt>
      </PledgesAndGrantsReceivableGrp>
      <AccountsReceivableGrp>
        <EOYAmt>0</EOYAmt>
      </AccountsReceivableGrp>
      <ReceivablesFromOfficersEtcGrp>
        <EOYAmt>0</EOYAmt>
      </ReceivablesFromOfficersEtcGrp>
      <RcvblFromDisqualifiedPrsnGrp>
        <EOYAmt>0</EOYAmt>
      </RcvblFromDisqualifiedPrsnGrp>
      <OthNotesLoansReceivableNetGrp>
        <EOYAmt>0</EOYAmt>
      </OthNotesLoansReceivableNetGrp>
      <InventoriesForSaleOrUseGrp>
        <EOYAmt>0</EOYAmt>
      </InventoriesForSaleOrUseGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <EOYAmt>0</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipBasisNetGrp>
        <EOYAmt>0</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <EOYAmt>0</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <InvestmentsOtherSecuritiesGrp>
        <EOYAmt>0</EOYAmt>
      </InvestmentsOtherSecuritiesGrp>
      <InvestmentsProgramRelatedGrp>
        <EOYAmt>0</EOYAmt>
      </InvestmentsProgramRelatedGrp>
      <IntangibleAssetsGrp>
        <EOYAmt>0</EOYAmt>
      </IntangibleAssetsGrp>
      <OtherAssetsTotalGrp>
        <EOYAmt>0</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>799247</BOYAmt>
        <EOYAmt>621393</EOYAmt>
      </TotalAssetsGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>799247</BOYAmt>
        <EOYAmt>621393</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>799247</BOYAmt>
        <EOYAmt>621393</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>799247</BOYAmt>
        <EOYAmt>621393</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-177854</ReconcilationRevenueExpnssAmt>
      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="IRS990ScheduleA" softwareId="23017517" softwareVersionNum="2023v5.1">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus3YearsAmt>27530</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>30780</CurrentTaxYearMinus2YearsAmt>
        <TotalAmt>58310</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>603677</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>620532</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>659000</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>676366</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>634823</CurrentTaxYearAmt>
        <TotalAmt>3194398</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <GrossReceiptsNonUnrltBusGrp>
        <TotalAmt>0</TotalAmt>
      </GrossReceiptsNonUnrltBusGrp>
      <TaxRevLeviedOrgnztnlBnft509Grp>
        <TotalAmt>0</TotalAmt>
      </TaxRevLeviedOrgnztnlBnft509Grp>
      <GovtFurnSrvcFcltsVl509Grp>
        <TotalAmt>0</TotalAmt>
      </GovtFurnSrvcFcltsVl509Grp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>603677</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>648062</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>689780</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>676366</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>634823</CurrentTaxYearAmt>
        <TotalAmt>3252708</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <TotalAmt>0</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <TotalAmt>0</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <PublicSupportTotal509Amt>3252708</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>4405</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>4704</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>5265</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>5362</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>2156</CurrentTaxYearAmt>
        <TotalAmt>21892</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <Post1975UBTIGrp>
        <TotalAmt>0</TotalAmt>
      </Post1975UBTIGrp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>4405</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>4704</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>5265</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>5362</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>2156</CurrentTaxYearAmt>
        <TotalAmt>21892</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <NetIncomeFromOtherUBIGrp>
        <TotalAmt>0</TotalAmt>
      </NetIncomeFromOtherUBIGrp>
      <OtherIncome509Grp>
        <TotalAmt>0</TotalAmt>
      </OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>608082</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>652766</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>695045</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>681728</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>636979</CurrentTaxYearAmt>
        <TotalAmt>3274600</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.99330</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.99270</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.00670</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.00730</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="IRS990ScheduleD" softwareId="23017517" softwareVersionNum="2023v5.1">
      <CollectionUsedPubExhibitionInd>X</CollectionUsedPubExhibitionInd>
      <CollectionUsedPreservationInd>X</CollectionUsedPreservationInd>
      <CollUsedLoanOrExchProgInd>X</CollUsedLoanOrExchProgInd>
      <SolicitedAssetsSaleInd>false</SolicitedAssetsSaleInd>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>618850</TotalRevEtcAuditedFinclStmtAmt>
      <RevenueSubtotalAmt>618850</RevenueSubtotalAmt>
      <TotalRevenuePerForm990Amt>618850</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>796704</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesSubtotalAmt>796704</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>796704</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part III, Line 1a: If organization elected under SFAS 116 to not report are, historical treasures, o</FormAndLineReferenceDesc>
        <ExplanationTxt>ART COLLECTIONS/EXHIBITIONS</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part III, Line 4: Description of organization's collections and how it furthers its purpose.</FormAndLineReferenceDesc>
        <ExplanationTxt>ART COLLECTIONS/EXHIBITIONS IN GALENA ILLINOIS, SCHAUMBURG ILLINOIS, CHICAGO ILLINOIS, ATHENS GREECE FOR THE PROMOTION AND EDUCATION OF THE LATEST AND BEST AMERICAN AND INTERNATIONAL ARCHITECTURE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X : FIN48 Footnote</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS EXEMPT FROM FEDERAL AND STATE INCOME TAXES UNDER SECTION 501C3 OF THE INTERNAL REVENUE CODE. THEREFORE, THE FINANCIAL STATEMENTS DO NOT INCLUDE A PROVISION FOR INCOME TAXES. THE ORGANIZATION REVIEWS INCOME TAX POSITIONS TAKEN OR EXPECTED TO BE TAKEN IN INCOME TAX RETURNS TO DETERMINE IF THERE ARE ANY INCOME TAX UNCERTAINTIES. THIS INCLUDES POSITIONS THAT THE ENTITY IS EXEMPT FROM INCOME TAXES OR NOT SUBJECT TO INCOME TAXES ON UNRELATED BUSINESS INCOME. THE ORGANIZATION RECOGNIZES TAX BENEFITS FROM UNCERTAIN TAX POSITIONS ONLY IF IT IS MORE LIKELY THAN NOT THAT THE TAX POSITIONS WILL BE SUSTAINED ON EXAMINATION BY TAXING AUTHORITIES, BASED ON THE TECHNICAL MERITS OF THE POSITIONS. THE ORGANIZATION HAS IDENTIFIED NO SIGNIFICANT INCOME TAX UNCERTAINTIES. THE ORGANIZATION FILES INFORMATION RETURNS AS A TAX-EXEMPT ORGANIZATION. SHOULD THAT STATUS BE CHALLENGED IN THE FUTURE, ALL YEARS SINCE INCEPTION COULD BE SUBJECT TO REVIEW BY THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="IRS990ScheduleG" softwareId="23017517" softwareVersionNum="2023v5.1">
      <AgrmtProfFundraisingActyInd>false</AgrmtProfFundraisingActyInd>
      <FundraisingEventInformationGrp>
        <Event1Nm>Special Events</Event1Nm>
        <GrossReceiptsEvent1Amt>21400</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>21400</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>18129</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>21400</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>21400</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>18129</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>18129</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>3271</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleJ documentId="IRS990ScheduleJ" softwareId="23017517" softwareVersionNum="2023v5.1">
      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>false</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>false</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>false</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>false</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>false</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>false</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>false</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Christian K Narkiewicz Laine</PersonNm>
        <TitleTxt>President &amp; CEO</TitleTxt>
        <BaseCompensationFilingOrgAmt>190000</BaseCompensationFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>190000</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO" softwareId="23017517" softwareVersionNum="2023v5.1">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>AN ELECTRONIC VERSION OF THE 990 IS REVIEWED PRIOR TO 990 SUBMISSION</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICTS OF INTEREST ARE CONTINUOUSLY ASSESSED BY THE BOARD</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15a</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD REVIEWS COMPENSATION</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15b</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD REVIEWS COMPENSATION</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 18</FormAndLineReferenceDesc>
        <ExplanationTxt>THE 990 CAN BE ACQUIRED THROUGH THE GUIDESTAR.ORG OR IL ATTORNEY GENERAL WEBSITES</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>AVAILABLE UPON REQUEST</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>