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
Cooper Hewitt, Smithsonian Design Museum made of Tiffany glass, was renovated in 1975. In 1995, the museum closed for a year for a $20 million renovation to connect the three buildings on the property, improve accessibility, and build a design study center. Funds for the 1995 renovation project included $13 million from the Smithsonian Institution and a $2 million donation by Agnes Bourne. In 2008, the museum started to undergo renovations. The renovation costs $91 million and is the largest in the museum's history. The renovation was partially financed by the museum endowment. The museum reopened on December 12, 2014. Additional renovations were completed in