Smithsonian Institution Building 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 style (a 12th-century combination of late Romanesque and early Gothic motifs; built in the Gothic and Romanesque revival styles) and is nicknamed The Castle. It was completed in 1855 and designated a National Historic Landmark in 1965. The Castle was the first Smithsonian building, designed by architect James Renwick, Jr., whose other works
Smithsonian Affiliations Smithsonian Affiliations Smithsonian Affiliations is a division of the Smithsonian Institution that establishes long-term partnerships with non-Smithsonian museums and educational and cultural organizations, in order to share collections, exhibitions and educational strategies and conduct joint research. Partner organizations are known as "Smithsonian Affiliates" and are allowed to use the tag line "In Association with the Smithsonian Institution" and the approved Smithsonian Affiliations logo on their website, programming, and marketing material. Any 501(c)(3) nonprofit or publicly operated educational entity can apply to become a Smithsonian Affiliate. The Smithsonian Affiliations program was established in 1996 by Smithsonian Secretary I. Michael Heyman with