The world's first hotel built in an abandoned water-filled quarry.

This psychedelic tourist trap is a leisurely descent into madness.

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

A remnant of Korea's colonial past lies forgotten in a hip neighborhood in Seoul.

The darkest building on Earth was built for the snow-white scenery of the 2018 Winter Olympics.

This former coal mine has been turned into a sprawling modern art complex.

This quirky Korean eatery is built to resemble an equally quirky vintage camera.

Step into a cartoon at this Seoul café that aims to evoke a two-dimensional scene.

A bright and wacky exhibit answers every question you may have had about human excrement, flatulence, and more.

South Korea's love of the silly photograph is on full display at this goofy collection of trompe l'oeil paintings.

Plenty of old carney magic still haunts this photogenic amusement park.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

This hulking behemoth is actually five interconnected towers built in the 1960s.

This Vietnamese bar doubles as a multistory labyrinth.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

A Surreal flight of architectural fancy in Vietnam's Central Highlands.

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

Vietnam's feral abandoned water park offers access to a post-apocalyptic funscape, now with fewer crocodiles.

World's largest cave was only discovered in 1991, and now offers tours to the public.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.