A fake Transylvanian castle houses a cathedral of antlers.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

Soak in the soul of Kansas City at the oldest continually-operating jazz club in the country.

At an estimated 3,800 years old, this olive tree is one of the oldest on earth.

A cheeky alleyway window hosts tiny rotating exhibits with outsized charm.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

This museum showcases the art of ancient sword-making.

This desert oddity hides in plain sight thanks to a cartographic error and a desert explorer with a punny sense of humor.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

Leonardo da Vinci was one of many to find inspiration in this unique, rocky landscape in Tuscany.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

Shrine to Japanese water-goblins, complete with their preserved body parts.

Stuck in a bygone era, the oldest subterranean shopping street in Japan hides beneath the popular Asakusa district of Tokyo.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

The charred, dead skeleton of an oak tree is said to have consoled a dying 16th-century Italian poet.

This Roman theater was crafted into the local tuff rock and was rediscovered during the 19th-century.

A series of caves, tunnels, and wells filled with fascinating figures and symbols.

Church holding the preserved body of a levitating saint.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.