This 11th-century Greek monastery has renowned mosaics and relics of a brutal past.

This medieval "painted village" is famous for its geometric facades.

The rocky remains of an ancient Greek forest.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

The chefs at El Diablo use heat generated by an active volcano to cook the food.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

A replica of the beloved character's house, modeled after the author's own drawings.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

Buried beneath an unassuming Gotland farm was the largest collection of Viking silver, mostly of Islamic origin.

This trio of stone spires claims to be the only preserved medieval execution site in Europe.

A catapult rock from Gotland’s 13th-century civil war is still lodged in Scandinavia's best-preserved medieval city wall.

Known locally as the Jungfrutornet, this Medieval tower hides a dark legend.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

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

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

This Polish cave has housed a dragon, a brothel, and an enduring legend.

An underground city of salt.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.

The world's most important buildings shrunk to a tiny size.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.