The abandoned Japanese amusement park once loomed as a dystopian Disneyland.

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

One of the few surviving World War II-era air-raid shelters in Tokyo.

One in a pair of subterranean caves created by an ancient eruption of Mount Fuji.

An eerie reminder to the horrors of World War II.

Nestled amid the trees lies an abandoned funicular railway that dates back to the 1920s.

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

The hometown of a beloved manga artist created a treasure hunt for his popular ghostly characters.

A giant rooftop ride with unbeatable views of Matsuyama city, the nearby mountain ranges, and the Inland Sea.

Narrow passes cut out of mountains surround the medieval capital of Japan.

Approximately 300 million years ago, a massive coral reef existed in what is now the largest limestone cave in Japan.

This quirky little private museum is home to more than a thousand stones, carved by nature, that resemble human faces.

Home to the world's oldest wooden building.

This mysterious medieval grotto holds a grid of sacred wells of unknown purpose.

The statue's head is one of the few fragments of the original Urakami Cathedral to survive the atomic bomb.

A flight of this "ghost staircase" has 40 steps on the way up, but only 39 steps on the way down.

Nestled in an unassuming residential area, this "forbidden forest" is rumored to spirit away those who dare to enter.

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

What's believed to be the country's first shrine is, in Shintō mythology, the annual meeting place of the gods.

A moss-covered statue of a Japanese Buddhist deity stands at a quiet temple in downtown Osaka.

Ever needed a chocolate-filled crepe in the wee hours of the morning?

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

A mysterious set of tunnels carved in the hills of rural northern Kyushu.

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