Europe's largest natural bridge has a 19th century royal chateau built into its side.

Ruins of a German Castle on top of a towering stone pillar.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

The Pope’s secret escape route.

Ancient ruins hidden underneath a modern luxury hotel.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

Ancient snack bar of the Roman Empire re-opened.

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

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

This attraction is devoted to the wonders of steam power and features a replica of one of its most public disasters.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

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

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.

The turquoise-studded skull of a long-dead Aztec man sits within Mexico City’s Museum of Anthropology.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

The most complete statue of this Aztec god sits a top a throne carved with images of hallucinogenic plants.

This ancient jade mask depicting the Zapotec bat god was found in the ruins of the pyramids of Monte Alban.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

The striking jade death mask of an ancient Maya king is displayed in a replica tomb in Mexico City.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

Eighty million natural history specimens call this gargantuan museum home.