| Federal Triangle | |
|---|---|
 Aerial view of Federal Triangle (center), the National Mall (on left), and Downtown Washington, D.C. (on right) in September 2006 | |
 A diagram of Federal Triangle as of 2009, showing all 10 key buildings in the complex | |
| Location | Washington, D.C., U.S. |
| Coordinates | 38°53′34.8″N 77°01′48″W / 38.893000°N 77.03000°W |
Federal Triangle is a triangular area in Washington, D.C., formed by 15th Street NW, Constitution Avenue NW, Pennsylvania Avenue NW, and E Street NW. Federal Triangle is occupied by 10 large city and federal office buildings, all of which are part of the Pennsylvania Avenue National Historic Site. Seven of the buildings in Federal Triangle were built by the U.S. federal government in the early and mid-1930s as part of a coordinated construction plan that has been called "one of the greatest building projects ever undertaken"[1] and all seven buildings are now designated as architecturally historic.
Federal Triangle station is the Washington Metro station serving Federal Triangle and its immediately surrounding areas.
- ^ Lee, Antionette Josephine. Architects to the Nation: The Rise and Decline of the Supervising Architect's Office. New York: Oxford University Press US, 2000, p. 241. ISBN 0-19-512822-2