A replica of where the Last Supper was held.

Natural time capsule containing an alien ecosystem.

A house of bones — but nobody is quite sure to whom they belong.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

Norway has built what may be the world's most beautiful public toilet.

Modern art meets modern convenience in possibly the world's most architecturally important public bathroom.

Rebuilt remains of a temple to Roman god Mithras.

This temple was constructed entirely by Roman soldiers.

The world's smallest movie theater runs on solar power—an attraction in itself.

Three bridges straddle a stream, one stacked upon the other.

An abandoned theme park with a strange and tumultuous past.

On Japan's Tashirojima Island, cats are king.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

A crucified and bearded female saint.

The soulless eyes of 82 bronze children stare on forever in remembrance of a horrifying World War II massacre.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

An 18th-century Catholic church converted into an eccentric temple of music and bacchanalia.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

Hidden by the roadside in the Iya Valley, this gem brings together folk monsters and the region's unique geography.