Smithsonian Institution Building (The Castle) in Washington, D.C.

The Smithsonian Institution Building (The Castle), located at 1000 Jefferson Dr SW in Washington, D.C., serves as the Smithsonian's iconic centerpiece. Opened in 1855, its distinctive architecture and rich history draw visitors curious about the museum complex. Inside, visitors can find information about various Smithsonian museums and exhibits, making it a crucial starting point for exploring the area. The building's gardens also provide a peaceful outdoor space amid the hustle and bustle.