An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.

This aging storage facility is the world's largest brick warehouse.

Pyramid shaped monument with a tall tale attached.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

The red letters in the literary pavement leading to the library form a mysterious code.

Six neolithic sandstone boulders remaining from a dolmen.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

Part ski resort, part modern art space, this lodge brings giant metal spiders and bloody doors to the Austrian Alps.

Op-art architecture designed for happiness.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A fearsome dragon clings to a corner of Munich's city hall.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Still standing despite its considerable slant, this tilted lighthouse has become a local symbol of resilience.