Air-raid tunnels hidden beneath this opulent hotel provided shelter and an escape route—and one of the world's longest slides.

Only through deep darkness and tragedy did this elaborate royal palace become a sacred temple.

This attraction is part anthropological journey and part amusement park.

An extraordinary natural landscape of mountains, waterfalls, and rocky cliffs riddled with tunnels.

The world’s largest work of glass art hides in this stunning Taiwanese subway station.

Grandpa Rainbow felt the neighborhood needed some color, so he picked up a paintbrush and went to work.

A rare pod of derelict midcentury Futuro and Venturo houses lines a semi-abandoned beachfront resort outside Taipei.

This fort dates back to 1588 and was colonized by the Portuguese, Dutch, and English and sits prominently on the Indian Ocean where azure water lap the coast.

This enigmatic stone pool is all that remains of an ancient palace.

This Colombo wetland is an unlikely wildlife haven just outside the capital city.

The first and only planetarium in Sri Lanka.

This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.

These abandoned ruins in the middle of Jaffna have withstood centuries of tumultuous power struggles.

One of the few places where inexperienced snorkelers can spot a shark.

The remains of a 37,000-year-old prehistoric society were discovered in this mammoth cave, one of the largest in Asia.

Seven beautiful 1,000-year-old rock-cut Buddhist statues.

The ruins of this old church are slowing sinking into the sand.

This luscious masterpiece created by landscape designer Bevis Bawa inspired the work of his brother, a famous Sri Lankan architect.

This mesmerizing architectural wonder will take your breath away with its unusual color patterns.

An ancient stone fortress considered by many to be the eighth wonder of the world.

A theme park made of glass, from the gleaming books on the shelves to the crystal fish in the mirror lake.

An arts and culture complex that was once a derelict American military installation in the civilian control zone of the DMZ.

This 317-ton walkable art installation is an homage to Korea's "City of Steel."

The supreme shrine of the state.