Countless grotesque faces stare out from this eerie Prague art wall.

Walk through Czech history in Prague's largest graveyard.

No one knows the origin of this creepy little stone man with an oversized phallus.

This region of Slovakia boasts some of the most plentiful opal mines in the world.

A line of disused military bunkers built to defend against Nazi invasion lies hidden on the outskirts of the city.

A unique hotel for the artistic soul.

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

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

Inside the Šomoška National Nature Reserve exists a unique rock formation rarely seen in the world.

An abandoned 19th-century iron factory perched along the outskirts of an idyllic village.

This fortress was designed to prevent a Nazi invasion but was never used.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

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

Tiny communists hammer away on the Olomouc Astronomical Clock.

The oldest wind turbine in Europe, constructed by a group of friends in 1932.

An underground city of salt.

Real bones which are said to have belonged to a Polish dragon.

Brought to you by the makers of fiberglass dinosaurs.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Gliwice Radio Tower, likely the tallest wooden structure in the world.

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

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

This man-made mound monument was built out of soil from all across the Polish empire.

This grubby wall is said to be one of the Earth's esoteric energy centers.