Something's watching you.

An eerie collection of the surviving structures from a past celebration of the future.

The oldest housing complex in Riga is a mini timeline of architectural trends.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

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

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

A beautiful young girl said to have been buried alive in her coffin…

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

Fountain where visitors can earn a license to be mad.

A mysterious stele of unknown origin sits on the peak of this curious mountain.

Leveled by an earthquake, this Italian village is now preserved as a massive concrete art project.

Ancient serpentine sacrifice holder that has stood the test of time.

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

Liquor and flowers mark a holy site for Indian motorcycle riders.

Built by King Norodom to honor his late father.

The capital of Cambodia is named after the hill on which this ancient temple complex stands.

Ancient snack bar of the Roman Empire re-opened.

Erotic art covers the walls of the largest ancient pleasure palace.

The glowing blue Nymphaeum of Emperor Tiberius.

Southern Italy's spinning top village.