This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Established in the '60s, a family-owned tropical drink bar founded by Ray Buhen, bartender to the stars.

One man's homage to the sun continues to grow like a glass fractal.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

This peculiar museum offers hands-on interaction with seemingly intangible principles of mathematics.

An abused and forgotten metropolis, abandoned for centuries.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

An ethereal glowing blue ocean cave in Croatia.

The remains of an entire Roman city can be explored in this interactive museum.

Bridge that died in war and was resurected.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

The place where World War I began.

Place with alleged mystical powers in Old Orthodox Church in Sarajevo.

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

A musical instrument played by the sea.

Humble beginnings for one of the world's most famous scientists.

Yugoslavia's biggest underground airport lies in ruins.

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

A marvel of technology a century ago, this disused power station now offers a lovely glimpse into the industrial design of the past.

This hidden art nouveau gem was designed by an architect in search of a national style.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

Once the home of a hermetic monk, this cave now houses a small church.