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

This former quarry is now a picturesque gorge that hides a sunken lake.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

Microscopic scenes; some call it novelty, some call it art.

An Orwellian sculpture with eyeball cameras watches passersby.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

The first museum in the world devoted to sexual gadgetry.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

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

A Jenga-style cylindrical tower of books that appears to go on forever.

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

Macabre astrological automaton clock dating to the late 1400s.

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

Two stunning 17th-century libraries and a cabinet of curiosities.

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

Two giant painted cooling towers make for one of the world’s most epic bungee jumps.

An ancient impact crater on the outskirts of Pretoria.