Head underground and take a tour of the city's working sewer system, and see the underground river Senne, which defined Brussels for centuries before being covered in the 19th century.

A local dive where religious kitsch, Southern identity, and queer culture collide.

This last stalwart of the now-forgotten feminist restaurant movement has been serving food in an activist atmosphere since 1977.

Home of a 28-foot tall stalagmite known as the War Club.

Spectacular mineral formations fill these caves, which have been used for everything from smoking meat to stashing illicit liquor.

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

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

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

This art center is way beyond your average pumpkin-carving operation.

A showcase of geologic history is home to one of the largest collection of lunar meteorites on Earth.

A taste of the macabre Tokyo's ritzy shopping district.

Puzzles within puzzles hide a golden treasure in this hedge maze.

The world's largest maze is a nature park with nearly 200 decision points.

A dream-like maze full of strange art, surreal spaces, and fantasy landscapes to get lost in.

The longest hedge maze in the world.

This village is home to the largest existing settlement of the Ainu, the Indigenous people of Japan.