Festival of Perpetual Life and Rebirth.

The massive white mound and accompanying water terraces are a striking geological oddity.

Hungarian self-built castle.

A fake Transylvanian castle houses a cathedral of antlers.

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.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

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

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

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

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Stone pillars and a petrified wedding party in the hills of North Macedonia.

Space-age monument to an early 20th-century uprising.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

Yugoslavia's biggest underground airport lies in ruins.

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

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.

This otherworldly French waterfall looks like its waters have turned to stone.

Green labyrinth formed by a karstic maze hidden in a preserved oak forest.

An enchanting work of outsider art, full of whimsical sculptures and carvings.

An art world insider finds himself battling for his artistic home.

The sunken structure looks like the victim of a catastrophic flood.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

The deserted pirate-themed restaurant still entices explorers.