Elegant marble and old vaults fill this historic Dutch bank turned office space.

A massive stone fox oversees a Rotterdam elementary school crosswalk.

This museum inside Amsterdam's largest cemetery explores how people deal with death.

One of the few places where inexperienced snorkelers can spot a shark.

This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

Huge herds of Asian elephants can be seen walking, bathing, and just chilling at this Sri Lankan park.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

Dive for drinks at Croatia's first and only underwater winery.

Just a few miles from Novalja, a strange geological oddity has left scientists baffled.

A self-proclaimed libertarian micro-state on a tiny bit of disputed territory between Serbia and Croatia.

A tower marking the spot where Yugoslavia began its resistance against the invading Nazis stands neglected, but not quite forgotten.

Croatia's towering concrete blossom grows from the site of a World War II concentration camp.

Longest fortress system anywhere in Europe.

Gargoyle head that brings good luck.

This huge metal monument is slowly being stripped to its concrete skeleton.

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

Legend has it fairies gathered at the site of this medieval castle.

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

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

Yugoslavia's biggest underground airport lies in ruins.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

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.