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      </Form990SchASupportingOrgGrp>
      <Form990SchAType3SprtOrgAllGrp>
        <TimelyProvidedDocumentsInd>1</TimelyProvidedDocumentsInd>
        <OfficersCloseRelationshipInd>1</OfficersCloseRelationshipInd>
        <SupportedOrgVoiceInvestmentInd>1</SupportedOrgVoiceInvestmentInd>
      </Form990SchAType3SprtOrgAllGrp>
      <Form990SchAType3FuncIntGrp>
        <ActivitiesTestInd>X</ActivitiesTestInd>
        <ActivitiesFurtherExemptPrpsInd>1</ActivitiesFurtherExemptPrpsInd>
        <ActivitiesEngagedOrgInvlmntInd>1</ActivitiesEngagedOrgInvlmntInd>
      </Form990SchAType3FuncIntGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART IV, SECTION E, LINES 2A AND 2B:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHILDREN'S MUSEUMLAB ADVANCEMENT INITIATIVE ASSISTS PITTSBURGH CHILDREN'S MUSEUM IN ITS MISSION BY DIRECTLY SUPPORTING THE ACTIVITIES AND EXEMPT PURPOSE OF THE MUSEUM.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART IV, SECTION D, LINES 2 AND 3:</FormAndLineReferenceDesc>
        <ExplanationTxt>CHRISTINE KOEBLEY IS THE SENIOR DIRECTOR OF FINANCE AND ADMINISTRATION OF THE SUPPORTED ORGANIZATION, THE MUSEUM, AND IS A MEMBER OF THE BOARD OF DIRECTORS OF THE CHILDREN'S MUSEUMLAB ADVANCEMENT INITIATIVE. THE ORGANIZATION WAS FORMED AT THE DIRECTION OF THE MUSEUM AS A SUPPORTING ORGANIZATION FOR THE MUSEUM IN ORDER TO FACILITATE FINANCING FOR THE PROJECT. THUS, COMMUNICATIONS, BOTH FORMAL AND INFORMAL, BETWEEN THE ORGANIZATION AND THE MUSEUM OCCUR DAILY AND ARE ONGOING. THESE COMMUNICATIONS INCLUDE DISCUSSIONS ON ORGANIZATION'S INVESTMENT POLICIES, THE MAKING AND TIMING OF GRANTS AND DIRECTING THE USE OF INCOME AND ASSETS.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>12993606</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>1792221</DepreciationAmt>
        <BookValueAmt>11201385</BookValueAmt>
      </BuildingsGrp>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>178591</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>146279</DepreciationAmt>
        <BookValueAmt>32312</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>450419</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>362293</DepreciationAmt>
        <BookValueAmt>88126</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>11321823</TotalBookValueLandBuildingsAmt>
      <OtherAssetsOrgGrp>
        <Desc>DUE FROM CHILDREN'S MUSEUM OF PITTSBURGH</Desc>
        <BookValueAmt>11981225</BookValueAmt>
      </OtherAssetsOrgGrp>
      <TotalBookValueOtherAssetsAmt>11981225</TotalBookValueOtherAssetsAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>DUE TO CHILDREN'S MUSEUM OF PITTSBURGH</Desc>
        <Amt>1354954</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>1354954</TotalLiabilityAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>CHILDREN'S MUSEUMLAB ADVANCEMENT INITIATIVE (CMAI) IS EXEMPT FROM FEDERAL INCOME TAX UNDER SECTION 501(C)(3) OF THE U.S. INTERNAL REVENUE CODE. CMAI RECOGNIZES AND REPORTS INCOME TAX LIABILITIES ARISING FROM UNRELATED BUSINESS ACTIVITIES ON FEDERAL FORM 990-T. CMAI FOLLOWS THE FASB ACCOUNTING STANDARDS CODIFICATION (CODIFICATION) TOPIC ON INCOME TAXES, WHICH PRESCRIBES A MINIMUM RECOGNITION THRESHOLD AND MEASUREMENT METHODOLOGY THAT A TAX POSITION TAKEN OR EXPECTED TO BE TAKEN IN A TAX RETURN IS REQUIRED TO MEET BEFORE BEING RECOGNIZED IN THE FINANCIAL STATEMENTS. CMAI'S STATEMENTS OF FINANCIAL POSITION AT JUNE 30, 2023 AND 2022 DO NOT INCLUDE ANY LIABILITIES ASSOCIATED WITH UNCERTAIN TAX POSITIONS; FURTHER, CMAI HAS NO UNRECOGNIZED TAX BENEFITS. THE CMAI IS NO LONGER SUBJECT TO EXAMINATION BY TAX AUTHORITIES FOR FISCAL YEARS BEFORE 2020.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>CHRISTINE KOEBLEY</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>133333</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>4242</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>18690</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>156265</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE TREASURER REVIEWS THE PREPARED FORM 990 ON A LINE-BY-LINE BASIS FOLLOWING RECEIPT OF THE RETURN. FOLLOWING HER ACCEPTANCE OF THE RETURN, A COPY IS GIVEN TO THE CHAIRMAN FOR REVIEW. FOLLOWING THEIR APPROVALS, A COPY IS MADE AVAILABLE TO MEMBERS OF THE BOARD FOR REVIEW PRIOR TO FILING WITH THE INTERNAL REVENUE SERVICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICT OF INTEREST FORMS ARE DISTRIBUTED ANNUALLY TO ALL BOARD MEMBERS. ANY BOARD MEMBERS WHO ARE NOT IN ATTENDANCE AT THE MEETING RECEIVE THE FORM ELECTRONICALLY WITH INSTRUCTIONS TO RETURN THE FORM TO THE MUSEUM. SIGNED FORMS ARE REQUIRED TO CONTINUE MEMBERSHIP ON THE BOARD. A SUMMARY OF THE CONFLICTS ARE COMPILED BY THE TREASURER OF CMAI AND PRESENTED TO THE BOARD CHAIR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS ARE MADE AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C, OVERSIGHT OF THE FINANCIAL STATEMENT AUDIT:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CONSOLIDATED FINANCIAL STATEMENTS ARE AUDITED BY AN INDEPENDENT ACCOUNTING FIRM. THE AUDIT IS REVIEWED BY THE FINANCE COMMITTEE OF THE CHILDREN'S MUSEUM OF PITTSBURGH FOLLOWING ITS COMPLETION AND THE COMMITTEE MAKES A RECOMMENDATION TO THE FULL BOARD FOR THE APPROVAL OF THE AUDIT. THE COMMITTEE ALSO ANNUALLY APPROVES THE INDEPENDENT AUDITOR.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>CHILDREN'S MUSEUM OF PITTSBURGH</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>10 CHILDRENS WAY ALLEGHENY SQUARE</AddressLine1Txt>
          <CityNm>PITTSBURGH</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>152125250</ZIPCd>
        </USAddress>
        <EIN>251379704</EIN>
        <PrimaryActivitiesTxt>SUPPORTED ORGANIZATION OF THE MUSEUMLAB</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>PA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 7</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>1</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>1</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
