How Many Buildings Does the Smithsonian Have in Washington, D.C.?

The Smithsonian Institution operates 17 museums and galleries in Washington, D.C. — not a single "building count," as many museums occupy multiple structures. Here’s the breakdown:

D.C. Museums (17)

• National Museum of Natural History
• National Air and Space Museum (2 locations: National Mall + Udvar-Hazy Center in Chantilly, VA)
• National Museum of American History
• National Gallery of Art (2 buildings: West + East, plus Sculpture Garden)
• National Museum of African American History & Culture
• National Museum of the American Indian
• Hirshhorn Museum & Sculpture Garden
• Freer Gallery of Art
• Arthur M. Sackler Gallery
• National Museum of African Art
• National Portrait Gallery
• Smithsonian American Art Museum (shares building with Portrait Gallery)
• Renwick Gallery
• National Postal Museum
• Anacostia Community Museum
• National Zoo (163-acre campus in Rock Creek Park — dozens of buildings)

Beyond D.C.

• 9 research centers (e.g., Smithsonian Astrophysical Observatory, Tropical Research Institute, Environmental Research Center)
• Affiliate museums nationwide (200+)
• Collections: ~157 million objects, specimens, artworks

So while "17 museums in D.C." is the standard figure, the physical footprint spans dozens of buildings across multiple campuses — all free to the public.