One of the world's largest ancient burial mounds.

Roots and stumps that lay inundated for two millennia are on display in Japan's city of three mysteries.

The largest of the Fuji Five Lakes is home to an impressive swan population—some real, some with paddles, and one with an observation deck.

This bridge is so steep it looks like a rollercoaster.

We heard you like volcanoes so we put a volcano in your volcano so you can die for sure...

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

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

One of Japan's most famous sights, the bridge was originally built in 1673.

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

The self-mummified monks of Japan.

Nine Gardens in one—with tea service.

Bioluminescent firefly squid light up this Japanese fishing port.

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

Every autumn, this hillside is ablaze with red summer cypress.

The iconic castle that withstood a magnitude 6.2 earthquake has become a symbol of resilience.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Nearly 100 concrete graves lie hidden just beyond the pristine waters along the coast.

A Swiss board game museum housed inside a picture-perfect castle.

This singular broken monument, now housed in a museum, was the cause of a worldwide "Mayan Doomsday" phenomenon.

Beach instrument turned bed and breakfast.

The "world's smallest volcano" has been used to store meals and dispose of dead bodies.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.