Asia's largest limestone cave is home to a world of plastic goblins and gold mining history.

The abandoned hospital whose elaborate ghost stories cover up the dirty truth - an uneventful sanitation issue and other mundane reasons for its demise.

South Korea's only sex-themed park.

Secret North Korean passage discovered below the world's most dangerous border.

Plenty of old carney magic still haunts this photogenic amusement park.

A memorial to the thousands of political dissidents imprisoned during the 38-year period of martial law in Taiwan.

This Taiwanese promontory is covered in otherworldly hoodoo formations.

A rare pod of derelict midcentury Futuro and Venturo houses lines a semi-abandoned beachfront resort outside Taipei.

A failed Russian themed village and amusement park in Niigata prefecture.

The iconic castle that withstood a magnitude 6.2 earthquake has become a symbol of resilience.

The world's largest radiation field is probably our best bet for irradiated vegetable superheroes.

A sobering scientific reminder of the human damage caused by the advent of the nuclear age.

Constructed thousands of years ago, these stone circles offer incredible insight into the lives of the people who built them.

A network of sandy streets lined with verdant fukugi trees weaves throughout this tiny seaside town.

A remote and slightly overgrown park filled with replicas of world landmarks.

A massive wintry wall of snow up to 66 feet tall flanks a highway through Japan's mountains.

This little known mountain has claimed four times as many lives as Everest.

A thick blanket of beautiful pampas grass cloaks this unique Japanese landscape.

This historic hydroelectric power plant in Japan has been preserved and is open to the public.

"Singing sands" and the world's largest hourglass reside near Japan's Kotogahama beach.

A derelict New Zealand-themed amusement park in Japan.

A semi-abandoned replica of Prince Edward Island's Avonlea—in Japan.

The Yonaguni Monument, a natural formation or the Japanese Atlantis?

This bridge is so steep it looks like a rollercoaster.