Historic medieval fortified city in southwest France.

A private garden of sculptural eccentricities.

Florentine Renaissance style building in Switzerland, home to the world's largest taxidermy Great White Shark.

The mummified heart of Louis XVII, the lost dauphin of the French Revolution.

1920's reinforced concrete church by architect Auguste Perret changes the face of modern design.

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

This massive library holds what was once the largest book collection in the world.

The celebrated eyesore created by starry-eyed sweethearts.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

A surrealist timepiece by the artist of melting clocks.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

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

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

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

Perfume museum and library.

One of the world's most complex timepieces.

18th century underground pilgrimage site, dedicated to a Saint that did something...

This famous writer's tombstone is a literary pilgrimage site that was publicly defiled by a rival.

This miniature Paris, built out of trash, is one man's two decade labor of love.

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

One of the greatest maze designer’s greatest mazes.

Limestone grottoes turns everyday objects into stone.