A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

Decades before the scandal, this staircase on the river was a literal "water gate."

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

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

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

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

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

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

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

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

This is not your typical jungle gym.

Less a museum than a bizarre fantasy world created by artists and engineers.

This mosaic-covered bar is brimming with curated curios.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

World-famous, Pink's still manages to keep its prized cult fetish status.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The "Seinfeld" diner.

Famously misunderstood wonder of the ancient world

Pilgrimage site for star-crossed lovers.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.