Washington DC Sites at Night Bike Tour. Experience the beauty of Washington, D.C. at night on this sites at night bike tour of the city. Check out the Jefferson, Lincoln and WWII memorials once the sun goes down and explore the Vietnam War Memorial and the National Mall at night. This popular tour offers travelers the chance to explore on two wheels after dark when monuments are less crowded. Book this Washington DC Sites at Night Bike Tour From $44.99.