Washington DC in One Day: Guided Sightseeing Tour. See the very best of Washington DC in one day! Aboard a state-of-the-art, luxury 30-passenger coach for a narrated 6-hour tour, see the White House, the National Mall, Smithsonian Museums and more, and enjoy guided walks around the US Capitol Building, the Lincoln Memorial, the World War II Memorial and the Korean War Veterans Memorial, giving you a more intimate look at DC's most famous landmarks. You’ll learn all about the sights you see from your knowledgeable guide. Book and Save 10%: Washington DC in One Day: Guided Sightseeing Tour.