This picturesque medieval monastery guards a small trove of historic treasures.

This former estate of a fascist leader is now a burnt out ruin leading to a system of secret tunnels.

Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.

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

Yugoslavia's biggest underground airport lies in ruins.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

Where the lovelorn find a home for their sentimental keepsakes.

A musical instrument played by the sea.

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

A network of sandy streets lined with verdant fukugi trees weaves throughout this tiny seaside town.

This breathtaking monastery was established by Saint Benedict himself 1,500 years ago.

The walls and streets of the ancient city are peppered with penises.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

The pile of books behind the dignified writer gave the statue a most undignified nickname.

Known as the "Stairway to Heaven," this historic canal dates back to the 1700s.

This tremendous timepiece was once the largest cuckoo clock in the world.

Okinawan dining in a twenty foot tall, man-made tree house overlooking Naha Harbor.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.

This little replica of Lady Liberty provides a bit of NYC in a Japanese city.

An ordinary pond with fish from out of this world.

The legendary birthplace of the Japanese maneki-neko is dotted with hundreds of lucky beckoning cats.

Nine Gardens in one—with tea service.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.