One of the best things to do in Washington DC at night is to take a ride on a fun, state-of-the-art Trolley with Old Town Trolley Tours. Their nighttime tour, Monuments by Moonlight, is an incredible ...
There are also still tour groups that descend nightly, like the ones on Old Town Trolley's "Monuments by Moonlight ... or night tour than a monument to the person who gives Washington, D.C ...