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

The world's longest tunnel with an undersea section.

The first location of the eventual video game giant.

This 400-year-old sweet shop serves a delicacy some have described as "edible incense."

Largest graveyard in all of Japan surrounds a famous mausoleum.

One of the world's largest tanks mimics the experience of watching rare whale sharks, giant rays, and deep sea creatures from the ocean floor.

Established over a thousand years ago, this family-run teahouse continues to serve skewers of sweet rice cake to this day.

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

A bibliophile's heaven that contains hundreds of bookstores, offering over a third of secondhand books for sale in Tokyo.

A train ride to the middle of nowhere gives its passengers some of the most iconic views of Japan's seasons.

Meet the world's longest tapeworm in a collection that really gets under your skin.

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

Open-air museum with an elaborate sculpture garden, stretching for over 70,000 square-meters.

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

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

Not quite the menace it once was, this monster still has some chops.

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

Anyone wanting to know what a dwarven mine sounds like need only visit the tunnels of this New Zealand artillery compound.

Handcrafted thermal spa washes away each night with the tide.

Tubing through a cave lit with glowworms is a magical underground experience.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

A Buddhist temple to honor insects that died for science.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.