These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

Be(w)ar(e) the moat around this historic Czech castle.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

You've probably seen these distinctive orange-tiled columns on the big screen.

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

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

A whimsical bridge adorned with decorative dragons.

Strange rumors surround the artist who created these solemn metal guard dogs.

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

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

This heart-shaped island looks substantially less lovely after a recent bulldozing project.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

A musical instrument played by the sea.

This 15th-century church houses priceless works of art from a range of Croatian artists.

Gargoyle head that brings good luck.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

An ancient knight and a symbol of the city's freedom.

Bursting forth from a historic German neighborhood, these day-glo palaces are now a bright fixture in the town.

A peculiar trapezoidal building covered with wonderful humorous reliefs.

This cheeky statue of a man defecating gold coins graces the facade of a medieval guildhall.