This small park holds what remains of a former prison and execution ground.

This monument celebrates this shopping district's past history as a feudal silver mint.

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

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

The world's longest tunnel with an undersea section.

After being lost for decades, this striking mural depicting the atomic bomb covers the wall of a busy Tokyo metro station.

This adorable birdlike police box is designed based on a play on words.

A giant robo-cockroach building devours Tokyo.

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

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

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

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

This neighborhood thoroughfare is haunted by dozens of homemade monsters.

The original "capsule building" is a masterpiece of Metabolist architecture.

This 700-year-old street food market features baby octopus and soy donuts.

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

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

Hot springs monkey spa in the middle of Hell's Valley.

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

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

Venture into the hideout of one of Hong Kong's legendary pirates.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.