The Pentagon Has 17 Miles Of Corridors.
It lays claim to over 6 million square feet of building which includes 17.5 miles of corridors. These gaudy statistics make it the largest office building in the world. The Pentagon, headquarters for the Department of Defense, is a five-sided building located in Arlington County, Virginia. Construction began on September 11, 1941. The Pentagon officially opened on January 14, 1943.
