This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

A quaint Russian village in the middle of a German metropolis.

Bohemian paradise covered in majestic forests.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

A strange rock formation with numerous legends trying to explain it.

Tall columns of volcanic basalt make up this improbable-seeming rock formation.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

Towering sandstone rock formations where 'The Chronicles of Narnia' was filmed.

This German "living museum" is maybe a bit too immersive.

"The most colorful grottoes of the world.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

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

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

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

The fairy tale castle of the "fairy-tale king."

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The 14th-century ruins are said to contain healing powers.

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

In the city forest of Augsburg are oval, artificial ponds formed from a World War II bombing campaign.

These spooky and unusual stone formations create an underworldly landscape.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.