After sitting unused for decades, this abandoned communist infrastructure became a wildlife utopia.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

This ghost-town bar has bullet holes and plenty of stories lurking within its walls.

Below this enormous headstone lie Billy and Benny McCrary, better known as the "McGuire Twins."

Once a safe haven for locals engaged in blood feuds, this 400-year-old fortified tower is now a museum showing what life was like for those lying in wait within its walls.

The final resting place of a baseball legend who was better known for his behavior off the field.

The last refinements in the North Carolina-South Carolina boundary were marked with this stone.

During the American Revolutionary War, iron excavated from this mine was used to make swords, cannons, and more.

The ruins of this once-grand mansion are linked to one of the country’s most popular clothing brands.

A permanent outdoor art installation made up of more than 100 mushroom-shaped lights.

The ruins of a 19th-century mill are hidden along a greenway in a prominent Charlotte neighborhood.

A historic arena where the Beatles played their first concert in the U.S.

The Liverpool street made famous by the Beatles is real.

Hidden under a center for the elderly are the dungeons which were used during the Spanish Inquisition.

This unassuming bookstore in the heart of Madrid is one of the oldest in Spain.

An ancient Egyptian temple in the middle of Madrid, Spain.

The video game-themed street art first popped up in the French city.

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

A surrealist timepiece by the artist of melting clocks.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A tribute shrine where the Space Invasion street art movement started.

This bridge was constructed from the rubble of the infamous Bastille.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Take in some Air Force history—and ogle some beautiful planes—at this little-known park near Myrtle Beach’s seashore.