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

Starting with nothing more than discarded conch shells, one man has built an island/bar that would make Jimmy Buffet jealous.

Rare signs of the former Soviet Union in the Caribbean, though not where you'd expect them.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

On a small Puerto Rican island, banks of secret naval bunkers lie abandoned and filled with piles of office equipment.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

A hotly contested micro-nation off the coast of Montserrat.

This mountaintop lake bubbles and steams in a perpetual boil, thanks to its direct link to the Earth's interior.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

A gateway to a mysterious network of underground tunnels.

One of the largest remaining ancient burial mounds of the 10th century.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

This derelict superstructure was a very important warning system for the Soviet military.

Island wonderland for communist autocrats.

The remains of a sunken military ship wreck visible through clear water.

Where the lovelorn find a home for their sentimental keepsakes.

An ethereal glowing blue ocean cave in Croatia.