This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

Drink the 'Blood of Christ' in this Roman Catholic fever dream.

Perfume museum and library.

One woman's decades-long obsession with the "La Fée Verte."

This building’s ghostly exterior reflects its former lives as a prison, school, and funeral home.

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

The largest underground lake in Europe.

This collection of French root art looks like an indoor fairy wonderland.

Nicknamed the "Museum of Horrors," this French anatomical collection has been fascinating visitors for over a century.

The fantastic architectural models of a French traveler.

A suspended footbridge allows for traversing this gorge carved through the French Alps.

Was the twisted roof on this church's belltower an intentional design or a happy accident?

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

Started as a kitchen garden, now the second largest botanical garden in the world.

Residents of Berlin take their coffee and cake in one of the city’s most restful spaces: a cemetery.

An eerie, derelict amusement park in Berlin.

Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

A wunderkammer of mysterious objects and stories.

Personal garden filled with mosaics made of recycled garbage.

Fur-lined metal pod dangling in the French countryside.

100-windowed castle turned art gallery, built by one dedicated mason.

On the grounds of a former estate in Burgundy stands an elaborate temple that is modeled after the first Tibetan Buddhist monastery.

Medieval Danse Macabre Fresco in Northern Brittany.