Limestone caves in the Cambodian countryside, once the site of genocide, now a place of peaceful beauty.

Khmer Rouge's high security prison.

A quick and simple solution to Cambodia's train woes.

5,000 skulls in memorial to those killed by the Khmer Rouge.

A battle between nature and architecture in the Cambodian jungle.

Peace Park and the Atomic Bomb Dome.

A bronze statue dating back as far as 1252, still has remnants of gold on its right cheek from ancient gilding.

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

The quintessential Japanese rock garden has existed for more than 500 years.

Japanese national treasure originally built in 593 CE.

The 10,000 Torii shrine.

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

A restaurant modeled after feudal Japan, where the waitstaff are trained as ninjas.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

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

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

God's Saharan sandbox of wrath.

Traditional 11th-century outdoor tannery.

The other side is actually green.

Mosaics, storks, and brothels—this ancient city has it all.

A fortified city, home to a remaining population of five families

One of the most spectacular canyons in the world.