The Bulgarian royal family exclusively used this ornate, now-abandoned train station.

Now a ruin, this grand resort was coveted by a communist autocrat and an eccentric Japanese golfer.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

This Romanian village may have been drowned, but it is long from forgotten.

A chemical factory damaged by two earthquakes and an explosion that became abandoned after bankruptcy.

After sitting unused for decades, this abandoned communist infrastructure became a wildlife utopia.

This metro station doubles as an unintentional paleontology museum.

An old spa town in the mountains of Romania where, according to legend, the great hero Hercules once bathed.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

One of Hungary's most influential places of learning is also home to one of the world's most beautiful libraries.

The only natural cave bath in all of Europe.

This building has survived for more than a century and remains virtually untouched.

The abandoned military base looks like a post-apocalyptic wasteland.

An industrial site turned into Hungary's most cherished natural wonder.

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.

An abandoned beach resort in Normandy reclaimed by artists.

This is what trains will look like after the zombie apocalypse.

The ruins of a military fortification sit atop this mountain.

This impressive chasm is one of the longest natural underground cavities in the world.

The evocative ruins of a medieval village.

Once known as one of the finest tourist railways in Europe.

This giant metal cross perched atop a mountain can only be reached by foot.