150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

This legendary city has been a tourist attraction for centuries.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

A distinctive former power plant turned university lecture hall looks like it could make you breakfast.

It houses the remains of a 17th-century version of the Titanic.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

This functioning parish church is also the site of many concert performances due to its wonderful acoustics.

The world's first and only escalator for lazy bicycles and their daunted riders.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

Norway's oldest cathedral still in use.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

The world's northernmost aquarium looks like it has fallen over.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Home to three historic ships from the age of Vikings.

Keep a lookout for replicas of this wooden soldier hiding in plain sight all around town.

One of the U.K's earliest public water supplies is within the "plague village."