# National Historic Landmark Old Patent Office Building façade in Washington, D.C., District of Columbia

        A masterpiece of Greek Revival architecture, this National Historic Landmark once housed the U.S. Patent Office and now hosts the National Portrait Gallery and the Smithsonian American Art Museum.

        ## Facts

        - Category: History
        - Best for: architecture, history, art, photography
        - Address: 8th St NW & F St NW, Washington, DC 20004
        - Canonical URL: https://gydeinfo.com/washington-dc/places/national-historic-landmark-old-patent-office-building-facade/

        ## Sources

        - Claim source: [History | National Portrait Gallery - Smithsonian Institution](https://npg.si.edu/about-us/history); source_type=official; allowed_use=canonical_data
- Claim source: [National Survey of Historic Sites and Buildings](https://npgallery.nps.gov/GetAsset/f7b5df4b-14b1-4d20-a9e9-e23a2e0e728d); source_type=official; allowed_use=canonical_data
- Claim source: [NHPA Section 106 Consultation Assessment of Effects Report](https://www.ncpc.gov/files/projects/2025/8617_Capital_One_Arena_Improvements_Section_106_Assessment_of_Effects_Report_Sep2025.pdf); source_type=official; allowed_use=canonical_data
- Claim source: [Renovation of Historic Home for Two Smithsonian Museums](https://americanart.si.edu/press/fact-sheets/renovation); source_type=official; allowed_use=canonical_data
- Claim source: [Temple of Invention: The History of a National Landmark](https://npg.si.edu/exhibition/temple-invention-history-national-landmark); source_type=official; allowed_use=canonical_data
- Claim source: [Visit the Smithsonian American Art Museum and National Portrait Gallery](https://americanart.si.edu/visit/saam-and-npg); source_type=official; allowed_use=canonical_data

        ## Booking CTAs

        - No verified booking links are available.

        ## Machine-readable evidence

        - Evidence JSON: https://gydeinfo.com/washington-dc/places/national-historic-landmark-old-patent-office-building-facade.evidence.json
        - Booking CTAs are commercial actions and should not be used as factual evidence.