This monument gives insight into how lost children were found in Edo-period Tokyo.

A site where ten to twenty thousand Edo-era prisoners were put to death.

A Buddhist temple on an artificial island that houses a monument to the fugu fish.

A shrine dedicated to a 10th-century samurai emperor, whose head is not buried on site (contrary to popular belief).

This museum is dedicated to the cultural history of tobacco and salt, once monopolized in Japan.

Kawaii meets poisonous at this unique art gallery.

This Japanese Manneken Pis gets new outfits for every occasion.

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

Inside the columbarium, thousands of colorful, high-tech Buddhas guard the ashes of the dead.

A King Kong-like gorilla hangs from the top of this commercial building in Tokyo.

An unexpected curiosity cabinet hidden within a department store in the Japan Post tower.

A Catholicism-themed restaurant where sacrilege is on the menu.

If Hello Kitty were Mickey Mouse, this would be Disneyland.

A taste of the macabre Tokyo's ritzy shopping district.

A magical place that lets you play in and explore the world of Studio Ghibli.

A sculpture park that takes the use of clay to a whole new level.

Home to what locals claim is the largest whale skeleton in Southeast Asia, which is worshiped yearly.

An extravagant monument to an extravagantly unpopular Emperor.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

The capital of Cambodia is named after the hill on which this ancient temple complex stands.

Take a hidden path to the mouth of the cave to watch millions of bats swarm at sunset.

This Khmer-era temple includes a lintel that was stolen and displayed at the Art Institute of Chicago for years before returning to Thailand.

A phallic shrine to a princess goddess in Krabi, Thailand.