The oldest stone house in Paris was built by its most famous alchemist.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Achill's most recently abandoned village dates back to to the Age of Enlightenment.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Hundreds of 19th-century characters descend upon an Ohio town every autumn.

The final resting place of the most famous sharpshooter.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

Prison made famous by The Shawshank Redemption has been out of commission since 1990.

The largest earthwork effigy in the world.

Take a drunken tour inside the world's largest known geode.

This mundane post marks the old location of the city's main postal hub.

The ruins of a 15th-century church once home to priests who prayed for a single family's salvation.

A rare permanent monument to the Scottish Travellers.

The world’s first museum dedicated to the history of childhood opened in Edinburgh in 1955.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

Ruined castle with subterranean vaulted Goblin Ha' or "Goblin Hall."

Largest lake in Great Britain measured by surface area.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

The very center of Paris is surrounded by a bevy of strange good luck rituals.