THING TO DO

See the original 1855 Castle from the outside

The turreted red sandstone building is the oldest Smithsonian structure and the anchor of the whole museum system. It's one of the most distinctive pieces of architecture on the Mall.

More about this spot.

Smithsonian Institution

at Capital Gallery

Research Institute

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Venues Inside

Anacostia Community Museum Smithsonian National Postal Museum Renwick Gallery of the Smithsonian American Art Museum Smithsonian National Museum of American History Hirshhorn Museum Smithsonian Arts + Industries Building S. Dillon Ripley Center Smithsonian Castle

600 Maryland Ave SW, Washington, DC 20024, USA

Southwest Federal Center

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Hours

Monday: 10:00 AM – 5:30 PM

Tuesday: 10:00 AM – 5:30 PM

Wednesday: 10:00 AM – 5:30 PM

Thursday: 10:00 AM – 5:30 PM

Friday: 10:00 AM – 5:30 PM

Saturday: 10:00 AM – 5:30 PM

Sunday: 10:00 AM – 5:30 PM