The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

A medieval military street hidden beneath a charming French fishing village.

This massive blockhead sculpture hides an entire library.

The construction of a tram line unveiled hidden remnants of the old medieval city.

The home where the famous astrologer wrote some of his most telling prophecies.

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

One architect's organic, human-centric design has been fully realized in this alien art house.

Balconies that have a most unusual accent.

This otherworldly French waterfall looks like its waters have turned to stone.

The castle where the Marquis de Sade lived out his darkest fantasies.

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

One of the largest ochre quarries in the world, hidden in a limestone landscape.

Since ancient times these picturesque springs have been providing bathers with healing waters.