The largest volcanic caldera in Japan holds an entire city in its maw.

The 10,000 Torii shrine.

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

A beautiful bamboo trail tucked in this famous Japanese shrine.

Secret North Korean passage discovered below the world's most dangerous border.

Explore the history of recorded sound at the world's third largest collection of Edison memorabilia.

Home to more than 13,000 pieces of war memorabilia and military equipment.

Numerical symbolism abound at East Asia's oldest observatory.

A 20-meter (65-foot) robot towers over Tokyo Bay.

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

The largest collection of model trains in the world is actually run using full-size locomotive technology.

This ancient temple is set up to take you on a pilgrimage of self.

Monsters and miniatures are held in equal esteem at this wondrous museum.

A musical instrument played by the sea.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

Tiny castle in the middle of the Rhine made you pay to pass.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Australia's first open air museum and antique 3D theater.

Home of the Large Hadron Collider and the birthplace of the World Wide Web.

It houses the remains of a 17th-century version of the Titanic.

Budapest's Communist-era statues, banished to the suburbs.

Metro station with a claim to rock n' roll fame.

Former headquarters of the KGB.

Where commuters walk through remnants of an ancient Greek necropolis.