The Best Sight in Pennsylvania, USA

This site commemorates the location of the home of U.S. presidents George Washington and John Adams from 1790 to 1800, as well as nine enslaved Africans who worked as household staff. This outdoor monument, which is open 24 hours a day, shows video clips that bring the house's history alive. Inside, take note of the bow window, which is thought to have inspired the shape of the Oval Office at the White House, as well as the remains of a passage torn down in 1832 that connected the main house to the slave quarters.