4. The basement is basically an underground strip mall.
Most people know about the bowling alley in the basement, which was added by pin-shark Nixon in ’69, but there are a couple other interesting spots down there. In addition to the Situation Room — where the president powwows with advisors during crises — there's a flower shop, carpenter’s shop, and a dentist’s office. You think the president has the time to step out for a filling? No sir.
5. It’s unsurprisingly hugely popular.
Each week the White House receives up to 30,000 visitors and 65,000 letters, plus nearly 3,500 phone calls, 100,000 emails, and 1,000 faxes, presumably sent from a time when people still used them.