Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Meet some of the most prominent figures in Black history through life-sized wax models.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

Washington's top-secret Cold War-era doomsday communications tower is located in a small neighborhood park.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

When it comes to handsignals (and colonialism) rock always beats scissors.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

The most accurate timepiece in the world.

It was once the base for a series of domestic terror attacks.

Largest Roman Catholic church in North America.

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

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

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

The walls of the iconic dome are hollow and have a secret stairway.

A historic neighborhood church is reborn as a psychedelic arts collective.

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.