Explore your favorite Smithsonian museums and gardens with touchless scavenger hunts!
Did you know that the Castle is the Smithsonian’s first and oldest building? It first opened its doors in 1855 and has witnessed countless moments in American and world history.
The Castle closed February 1, 2023, for its first major renovation in more than 50 years. All elements of the building will undergo extensive repairs and upgrades. The renovation is expected to last about five years.
While the Castle is closed, join one of our Castle Docents for a live Castle talk and meet some of the people who shaped the early Smithsonian. Learn about the founding and early history of the Smithsonian and its original benefactor, James Smithson. Discover the incredible history and architecture of the Castle, and explore the Castle Collection online.