[edan-image:id=siris_sic_9272,size=300,left]The Smithsonian Institution Building, popularly known as the "Castle," was designed by architect James Renwick, Jr. The building is constructed of red sandstone from Seneca Creek, Maryland, in the Norman style (a 12th-century combination of late Romanesque and early Gothic motifs). When it was completed in 1855, it sat on an isolated piece of land cut off from downtown Washington, DC, by a canal. In the ensuing decades, the Castle became the anchor ...
