Smithsonian Institution Building informal medievally-inspired design, which would not suffer if asymmetrically developed. The Smithsonian Castle houses the administrative offices of the Smithsonian. The main Smithsonian visitor center is also located here, with interactive displays and maps. Computers electronically answer most common questions. A crypt just inside the north entrance houses the tomb of James Smithson. Smithsonian Institution Building The Smithsonian Institution Building, located near the National Mall in Washington, D.C. behind the National Museum of African Art and the Sackler Gallery, houses the Smithsonian Institution's administrative offices and information center. The building is constructed of Seneca red sandstone in the faux Norman
Smithsonian Institution in early bilateral scientific exchanges with the Academy of Sciences of Cuba. The Smithsonian Institution Building ("the Castle") began construction in 1849. Designed by architect James Renwick Jr., its interiors were completed by general contractor Gilbert Cameron. The building opened in 1855. The Smithsonian's first expansion came with construction of the Arts and Industries Building in 1881. Congress had promised to build a new structure for the museum if the 1876 Philadelphia Centennial Exposition generated enough income. It did, and the building was designed by architects Adolf Cluss and Paul Schulze, based on original plans developed by Major General Montgomery