Towns with a resource known as "white gold," valuable enough to fight a war over, now stand ghostly and empty.

Built for the 1962 World Cup, this fully functioning botanical clock is still ticking.

What was once a unique system of urban elevators is turning into a mechanical ruin.

This was once the center of the Birdman cult, and is now a World Heritage Site.

A volcanic crater that visitors can look inside.

The world's most remote airport.

The largest stone moai on Rapa Nui.

A never-finished memorial to the heroes of the Napoleonic War has become "Scotland's Folly."

Colorado’s most beloved glacier is an imposter.

Honoring the adaptive athlete's Marathon of Hope.

Latvia’s first skyscraper, nicknamed ‘Stalin’s birthday cake.’

A testament to Colorado’s rugged mining history sits against a backdrop of striking mountain scenery.

Time capsule of a museum, in which the Soviet Union remains alive and kicking.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

Hike up to this ancestral grain storage site, but don't touch.

A dictator's gold statue once rotated to face the sun on a 75-meter high marble tower.

If you want to get married in the White Marble City of Ashgabat, you should do it in this surreal disco ball building.

A fiery crater has been burning in the Karakum Desert since 1971.

Prowl through this sprawling bazaar under a massive Soviet-era dome for delicious eats.

Controversially restored in the 1970s, this giant 15th-century mosque is shrouded in legend.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Once a luxurious flagship of the Soviet Union, this Brutalist structure remains a landmark of Tashkent’s communist past.

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.