One of the earliest depictions of an Arthurian scene that is shrouded in mystery.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

Fortified medieval tower house with lovely roof garden.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

Windblown rock formations in an ancient Roman quarry.

You can get anything you want at the former site of the restaurant immortalized by Arlo Guthrie.

Dine like an American revolutionary at Colonial Williamsburg.

This coffee shop lies hidden beneath a historic church.

Across the islands, baked goods, sauces, and much more are for sale 24/7.

After decades of neglect, a brutalist icon is getting new life as an eco-friendly hotel.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

A massively oversized measuring tape sculpture sits inside a hidden yard.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

This symbol of the French Revolution still stands where it was first planted during the 18th-century.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

The famous winding walk at Chartres is surrounded in mystery and myth.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

France's national museum of scientific and industrial instruments.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

The walls and streets of the ancient city are peppered with penises.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.