Smithsonian Institution Building

The Smithsonian Castle features Norman Revival architecture with distinctive red sandstone blocks quarried from Maryland, forming a central administrative building.

Architect James Renwick Jr won a nationwide competition in 1846 to design this building, which opened in 1855 as the Smithsonian Institution headquarters.

The Castle serves as an information center for all Smithsonian museums, displaying artifacts and exhibits that represent the institution's extensive collections.

The building remains closed until 2028 for extensive renovations, including restoration of the Grand Hall and modernization of building systems.

The crypt of James Smithson, the British scientist who funded the institution without ever visiting America, rests inside the north entrance.

Location: Washington, D.C.

Inception: 1849

Architects: James Renwick Jr.

Official opening: 1855

Architectural style: Romanesque Revival architecture

Floors above the ground: 4

Made from material: red sandstone

Operator: Smithsonian Institution

Part of: Smithsonian Institution

Address: 1000 Jefferson Dr SW, Washington, DC 20560 20560

Opening Hours: Monday-Sunday 8:00-17:30

Website: https://si.edu/Museums/smithsonian-institution-building

GPS coordinates: 38.88875,-77.02600

Latest update: May 26, 2025 21:22