The vast, legendary catacombs hold secrets much stranger than stacked bones.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

One of the greatest maze designer’s greatest mazes.

Each time a baby is born in Ghent, these streetlights flash in silent celebration.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

An eerie, derelict amusement park in Berlin.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

The humble home where the famous beat author lived briefly and wrote one of his most famous works.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

At first glance, little checkered structures on the hillside look like they house the living, not the dead.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Walk through Czech history in Prague's largest graveyard.

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