In this historic region, homes and churches are carved into ancient volcanic rock formations.

In Egypt's expanding metro area, many of the neighbors are dead.

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

The largest manmade caves in Europe now function as a motorbike club's headquarters.

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

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

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

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

Bohemian paradise covered in majestic forests.

Two monstrous faces loom over a village in Czechia.

The first museum in the world devoted to sexual gadgetry.

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

Climb around the high waterfalls on series of iron ladders and bridges within the wildest gorge in the Slovak Paradise.

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

The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

The majority of the highest mountain in Poland is actually located in a different country.

The biggest exposition of dental equipement in Europe. And a Mummy.

One of the largest amphitheaters in Europe is a former Nazi gathering place that still stands today.