The Pentagon is the main headquarters for the United States Department of Defense. Construction began on the building on ironically September 11, 1941, sixty years before the 9/11 attack on the United States. It took 16 months to build with a total cost of 83 million dollars and was dedicated on January 15, 1943. The Pentagon building is the highest capacity office building in the world and one of the world's largest buildings in terms of floor area.
"As soon as we sat on the bus and watched the red buses go by, we knew we had made the right choice. "