Wikimore

**Smithsonian Institution Building**
	administrative building for Smithsonian Institution, Washington, D.C.
	Upload media
	Wikipedia
Instance of	administrative building;
Part of	Smithsonian Institution;
Made from material	red sandstone (dark red, slavery, Seneca Quarry, façade);
Location	National Mall, Washington, D.C., District of Columbia
Street address	1000 Jefferson Dr SW, Washington, DC 20560;
Architectural style	Romanesque Revival architecture;
Architect	James Renwick Jr.;
Heritage designation	National Historic Landmark (1965–); National Register of Historic Places listed place (A, C, Smithsonian Building, NRHP building, 1966–); District of Columbia Inventory of Historic Sites (1964–);
Inception	1849;
Date of official opening	1855;
Significant event	construction (1849–1855);
Visitors per year	1,100,000 ±50000 (2015);
	official website
	Category:Uses of Wikidata Infobox with maps38° 53′ 19.49″ N, 77° 01′ 33.59″ W
Authority file
	Q605937; VIAF cluster ID: 316746605; Library of Congress Authorities ID: sh85123674; BabelNet ID: 03561735n; J9U entity ID: 987007282198205171; NRHP reference number: 66000867; OpenStreetMap relation ID: 7393969; LoC HABS/HAER/HALS place ID: dc0231
	Reasonator; Scholia; Wikidocumentaries; KML file; WikiShootMe; OpenStreetMap; Search depicted;

Category:Uses of Wikidata InfoboxCategory:National Register of Historic Places with known IDs#%2066000867

The Smithsonian Institution Building, located on the National Mall in Washington, D.C., houses the administrative offices and information center of the Smithsonian Institution. The building is constructed of red sandstone in the Norman style (a 12th-century combination of late Romanesque and early Gothic motifs) and is appropriately nicknamed The Castle.