The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

This professional clown's home is an outsider art wonderland.

The only remaining collection of flayed figures made by French "madman" Honoré Fragonard.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

Science fiction's grandfather has a fittingly marvelous tomb.

One of the greatest maze designer’s greatest mazes.

The history of radiation is on safe display at the foot of a radiation science laboratory.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

A museum of magic with a Sadist past.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

An alchemist's "magic door" stands in the middle of a Roman park.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

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

Tokyo’s only Vaudeville-cuckoo clock–steampunk-Victorian curio cabinet time piece.

The beautiful baroque library of the Hapsburg empire.

Hollowed out cedar log tubs set in an ancient towering forest.

The most visited, and possibly most controversial, museum in Germany.