An eerie natural formation that looks right back at you.

An actual 1957 Cadillac De Ville, encased in 15 cubic yards of concrete.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

Monasteries on rock pillars, once accessible only by frayed ropes.

The hallucinogenic center of the ancient world.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

This hidden bridge is where local children leave gifts and messages for the island's fay folk.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The rubbery beast is sculpted from recycled materials.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Oregon's only closed-basin hypersaline lake, an important stopover for migrating waterfowl, is in danger of drying up completely.

A historic and beautiful Art Nouveau chamber in a historic railway station.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

A fortified city, home to a remaining population of five families

Traditional 11th-century outdoor tannery.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.