The site of the first medieval crusade that pitted Christians against Christians.

Rows of multicolored bathing huts paint the sand dunes with pops of color.

A medieval house adorned with enigmatic carvings, including one of a man displaying his masculine attributes.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

This church looks more like a spaceship than a house of worship.

These rustic holiday homes are made from discarded fishing boat hulls.

Ivy-covered Medieval tunnels cut through this charming town in France's Loire Valley.

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

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

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

The birthplace of the ferocious William the Conqueror, this castle is awash in medieval history.

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

A unique zoological park home to over 30 species of wild cats, both big and small.

This 5,000-year-old tomb once had its own hinged door.

A granite rock formation littered with various species of moss, lichen, and fern.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

This stone quarry was used to make axes and other tools more than 6,000 years ago.

Journey through the ruins of this ancient Roman temple dedicated to the god of war.

This mysterious sculpture was thought to symbolize a world ravaged by misery.

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.

The precise origins of this pink sandstone temple are unknown.

This bunker in northern France was built by Nazi German forces with the intention of launching up to 50 V2 rockets at London each day.

A small house sits between two huge rocks, with its back to the sea.