The hallucinogenic center of the ancient world.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Only hotel where you can legally launder money.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The largest earthwork effigy in the world.

The world's longest known cave system.

This magnificent Cincinnati graveyard is also a popular public park.

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

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

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

An overlooked memorial honoring the local Washington residents who died in World War I.

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

Look closely and you’ll notice that the color changes a third of the way up the tower.

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

The national park was once a plantation estate.

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

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Home to items never before seen by the public.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.