Description:Take a tour of Washington DC, United States, at Night - part of the World’s Greatest Attractions travel video series by GeoBeats. Washington, DC is home to many of the United States' key national monuments. The luminous pearly facades of these classic structures makes their beauty come alive at night. The lights which illuminate the Supreme Court remain into the long hours of the night. One of the city's most striking memorials to visit at night is the Lincoln Memorial.(1:05)