A perfectly preserved hill village where the buildings are painted like white lace.

The world's greatest slide descends 18 stories from this looping mountaintop viewing platform.

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.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

A former top secret nuclear fallout shelter now operates like a hotel stuck in the Cold War.

Before building her own tombstone, an untrained artist created a concrete menagerie in her garden.

A mesmerizing landscape of 18th-century cellars carved out of the land.

This network of conjoined cellars was riddled with traps and supposedly allowed the townspeople to pretend their homes were deserted.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

A unique hotel for the artistic soul.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

"Medieval" castle built in the mid-20th century by one family.

A cableway for car transport.

Macabre astrological automaton clock dating to the late 1400s.

A Jenga-style cylindrical tower of books that appears to go on forever.

This former quarry is now a picturesque gorge that hides a sunken lake.

A spiral staircase twists to the top of this unusual Czech lookout tower.

These 18th century gardens tell a rocky story of the son of Odysseus.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.

Bell tower juts out from a village buried under a lake.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

A man-made slag heap that you can "ski" down, and is home to the world sandboarding championships.