The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

The fantastic architectural models of a French traveler.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

Avant garde house of Pierre Cardin on the Cote d’Azur.

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

BDSM, 1930s Style.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

This massive blockhead sculpture hides an entire library.

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

Where the high court feasted, frolicked, and high courtesans put their royal lovers' diamonds to the test.

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

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

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.

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

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

One of the greatest maze designer’s greatest mazes.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

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

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

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