An eerie reminder to the horrors of World War II.

These wondrously illuminated caverns extend under the mountains of the Fukushima Prefecture.

An eerie maze of industrial factories looks like something out of a dystopian sci-fi.

This traditional Japanese-style house doubles as one of James Turrell's colorful works of art.

Hidden by the roadside in the Iya Valley, this gem brings together folk monsters and the region's unique geography.

A quaint amusement park now sits, rusting and forgotten among the foliage.

Elaborate series of tunnels where traces of mass suicide are still visible.

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

This active volcano's siren song to suicide jumpers forced authorities to build a fence.

Closed for decades, this strange symbol of Japan's Expo '70 has finally opened its psychedelic insides to the public.

Enormous underground chamber built to detect 'ghost particles' of the universe.

The world's largest drain sits below the city of Kasukabe, Japan.

A steaming, boiling hellscape sources Hokkaido's thermal baths.

Peace Park and the Atomic Bomb Dome.

Abandoned Japanese ghost town gives a glimpse into what our own metropolises may leave behind.

A disconnected rotary phone for "calling" lost loved ones offered a unique way of dealing with grief in disaster-stricken Japan.

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

Legend holds eating just one of these black eggs can add seven years to one's life.

Dedicated to the armor and weapons used by the legendary Japanese warriors.

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

Meet the world's longest tapeworm in a collection that really gets under your skin.

This isolated Japanese mountain village untouched by time showcases unique and stunning traditional architecture.

A bibliophile's heaven that contains hundreds of bookstores, offering over a third of secondhand books for sale in Tokyo.

The self-mummified monks of Japan.