One man's remarkable private collection of art from around the world.

A cluster of granite granaries perched on stilts.

This star-shaped military outpost is now simply trying to protect itself from neglect.

The corpse bride of Portugal.

One of the largest Roman settlements in Portugal.

This crumbling Portuguese ruin overlooks the populace it once ruled.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

A unique seaside cave where Aleister Crowley faked his own death.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

An atmospheric, medieval-themed book store hides in a 13th-century underground space.

A beautiful and classically designed villa, with an hourly infestation of monsters.

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

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

A bridge that dates back to the 12th century is said to have made the devil very angry.

A beautiful lighthouse with as many steps as days in the year, as many windows as weeks, and as many levels as months.

Legend has it this 11th-century castle was paid a visit from the devil.

The video game-themed street art first popped up in the French city.