Pop culture has helped to keep this iconic British building from being destroyed.

Catacombs turned marketplace.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A decaying, yet still functioning, work of communist architecture.

A vast Communist-era exhibition space in the Bulgarian capital.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A striking symbol of the Bulgarian capital.

An abandoned saucer-shaped monument in the Bulgarian mountains.

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

Historical Japanese-Dutch relations are honored with haunted rides and flower fields in this replica town.

Peace Park and the Atomic Bomb Dome.

The world’s first hotel to be run by robots.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

Once a black market electronics marketplace, now an otaku shopper's paradise.

Japanese national treasure originally built in 593 CE.

The 10,000 Torii shrine.

Once the most densely populated place in the world, this island is now a ghost town.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

This attraction was abandoned after the Chernobyl disaster.

This derelict superstructure was a very important warning system for the Soviet military.

The dining hall that nourishes workers in Chernobyl's Exclusion Zone is also open to visitors.

The biblical sculpture honors those who lost their lives, homes and communities to the Chernobyl disaster.

An Art Nouveau building covered in animal gargoyles and grotesques.