The world’s largest underwater sculpture is found just off the coast of Nassau.

One of the deepest blue holes in the world.

In paradise, feral pigs have claimed an island all to themselves.

One of only a handful of seaside temples in Korea, this sacred space is home to a legendary healing Buddha statue and a traffic safety prayer pagoda.

Trees emerge from the surface of this small man-made reservoir.

This human-made pond is part of a Korean palace complex first built in the 7th century.

The toilet-shaped house of South Korea's sanitation pioneer is now a museum to the john.

Along a rail-biking route, giant insects house a two-story restaurant.

An all-female order shares an ancient culinary art with visitors at their mountaintop monastery.

The 400-year-old remains of the samurai invasion of Korea.

Various forms of phallic art decorate this hill in commemoration of legendary local tragedy.

About as hidden as can be, this specialty coffee shop is wedged between multi-story buildings at the end of a dark, skinny alleyway in Seoul.

South Korea's only sex-themed park.

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

The abandoned hospital whose elaborate ghost stories cover up the dirty truth - an uneventful sanitation issue and other mundane reasons for its demise.

A 32-acre fun park dedicated to all things cheese.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Activists are fighting to preserve these unfinished highway ramps as a tribute to the citizen revolt that halted their construction decades ago.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

This sculpture forces visitors to confront their relationship with space.

The Denny Substation has been called "the coolest substation in the world" and sits in a densely populated Seattle neighborhood.

Once a year, thousands of naked cyclists flood the streets of a Seattle neighborhood.

Providing the soundtrack to the golden years of the Seattle grunge scene.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.