The span is crooked and made from two older recycled bridges.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Home to a vast and influential collection of Shakespeareana.

A Spiritualist house of worship where believers communicate with the dead in the spirit world.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

A painfully obvious spy house sits right across the street from the Russian Embassy.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Home to items never before seen by the public.

The site of the climactic scene from the classic horror film is now a historic landmark.