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

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

An eerie, existential museum dedicated to the author of "The Metamorphosis."

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

Macabre astrological automaton clock dating to the late 1400s.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

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

An enormous and lavish Gothic church in Czechia.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

The "dragon babies" of southeastern Europe.

This one-time health resort was used by aristocrats around the world.

A miniature train-ride through Slovenia's largest cave system.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A public work of art that also provides some relief from the summer heat.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

A war-torn Olympic relic is being overtaken by graffiti and nature.

The place where World War I began.

The first mosque in the world to receive electricity.

Oriental bazaar in the heart of Sarajevo.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

A sculpture of the beloved author surrounded by characters from his fairy tales.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.