Modern design and unusual architecture make this mountaintop temple no ordinary Buddhist retreat.

An Orwellian sculpture with eyeball cameras watches passersby.

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

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

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

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

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

Walk through Czech history in Prague's largest graveyard.

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

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

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.

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

When the rain falls, this drain system turns into a musical instrument.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The idyllic island where the philosopher Jean-Jacques Rousseau spent “the happiest time of his life.”

The last woman executed for witchcraft in Europe is remembered in this Swiss museum.

This natural "sea of stones" was once used by the Romans as a quarry.

Crop circles inspired this whimsical garden in Germany.

A 16th-century horror show built in a lovely Italian garden.

A series of haunting wooden totems are hidden in the woods surrounding a German environmental center.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

Architectural monsters are devouring this palace's every door and window.