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

Coast along one of Japan’s mountain railways for coveted views of magnificent hydrangeas.

This subterranean spot might be the epitome of Japan's baroque, retro coffee houses.

Steaming blood-red hot spring from hell.

With over 12,000 different species of plants, this botanical garden is Japan's oldest and most diverse.

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

Reportedly 1,400 years old, this may be the first of the Fiji Mermaids.

A massive cave complex boasts some of the clearest water (and most charming bats) in the world.

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.”

Japanese island famous for poison gas and fluffy bunnies.

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

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.

The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.

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

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

The magical, mossy forest that inspired Princess Mononoke.

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.

On Japan's Tashirojima Island, cats are king.

A garden oasis filled with flowers mentioned in the works of William Shakespeare.

Gold Rush ship-turned-hotel buried underneath San Francisco's financial district.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.