A memorial to the beloved brown bear that served in the Polish army during World War II.

This hidden collection of everyday objects illustrates life within communist Poland.

A national collection of Communist-era musical posters.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

Warsaw's fantastically preserved gasworks...almost.

A hidden art gallery in an abandoned Warsaw fort.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

A haunting deserted hotel is a favorite with artists and photographers.

In this town's main square resides a statue of none other than the 43rd President of the United States.

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

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 ethereal glowing blue ocean cave in Croatia.

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

Where the lovelorn find a home for their sentimental keepsakes.

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

Yugoslavia's biggest underground airport lies in ruins.

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

A statue of Paulina Hermann, the eccentric noblewoman known as the "mother of cats."

A unique two-level bridge designed to honor a king.