This fairytale inspired, warped building houses restaurants, shops, and a radio station.

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

Museum dedicated to "the man who moved the Earth."

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

A hidden art gallery in an abandoned Warsaw fort.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

An underground city of salt.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Part shoe store, part sociopolitical art gallery, part zoo.

Source for a sizable portion of Egypt's freshwater supply is more than an optical illusion.

Ancient Egyptian relief, claimed to depict an electrical light.

Egyptian treasure trove of fossils documenting the whale's transition from land mammal to sea creature.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

The massive cave church of Cairo's Zabbaleen community is one of the largest Christian churches in the Middle East.

An alien landscape of chalk-rock in the Egyptian desert.

One of the most well-preserved temples of ancient Egypt.

This 135-year-old weather station studied the effects of the climate on human health.

Built as an anti-fascist tribute, this surreal Yugoslav memorial became an unwelcome symbol after the Croatian war for independence.

Croatia's towering concrete blossom grows from the site of a World War II concentration camp.

Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.