This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

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

This striking observation tower shaped like a spinnaker sail is the newest icon in historic Portsmouth.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

Climb inside an iron crystal magnified 165 billion times its normal size.

Christ's blood preserved in a Belgian town.

Beneath the city of Lourdes, France is a massive, concrete church.

Also known as the Blue Church, the building was consecrated to the daughter of Andrew II.

Budapest's Communist-era statues, banished to the suburbs.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

The ruined doorway is a portal to the building's turbulent and torturous past.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

Pilgrimage site for star-crossed lovers.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Commonly acknowledged as the only public monument to the Devil himself.