A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

An incredibly well-preserved piece of ninth-century Viking poop.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

Go inside to really appreciate this 500-year-old technological masterpiece.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

Dozens of feral felines rule a segment of Hollywood's only graveyard.

Resting place of Hollywood's immortals is also site of summer film screenings.

Because there's no place like home.

The man who voiced Bugs Bunny, Daffy Duck, Porky Pig, and more has a headstone reading, "That's all, folks!"

The remnants of a classic 1970's British film.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

A bus with a butt and biceps to put Olympic athletes to shame.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Countless grotesque faces stare out from this eerie Prague art wall.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

A church of bones, decorated with 40,000 human skeletons.

A secret door leads to this cozy dive that sells only “milk.”

Hidden on a cobblestone street in Glasgow, a Czech Cajovna-inspired teahouse serves as a hangout for Bohemians.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

Located in the world's highest-altitude Dark Sky Community, this observatory welcomes amateur and professional astronomers alike.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

The scene of the United Kingdom's most famous UFO incident, dubbed the "British Roswell."

The hidden lair of an alchemist rediscovered in a 2002 flood.

Macabre astrological automaton clock dating to the late 1400s.