I took a tour of the White House in 1999, I had to get up at 0530, to wait for tickets.
niceguymr: get your friend to take you on a tour of the Pentagon, tours are available only if you know someone. The tours were discontinued after the Sept 11, 2001 WTC/Pentagon attack. But there is nothing really exciting to see there, the whole place remains of a shopping mall, and a huge office building, no tanks, planes, etc.