This top secret Chinese military megaproject is the world’s largest human-made tunnel structure.

The western-most fortress on the Great Wall of China has gone from a strategic stronghold to a kitschy tourist carnival.

A palatial horse museum outside Shanghai is home to the most pampered horses in the world.

A spectacular annual festival centers around humans throwing molten iron against a wall at night.

This aquarium has almost as many world records as it does fish.

A son-and-daughter meat market, hawked by mom and dad.

Described as "the world's most blinging pool."

A magical work of architecture where a wind turbine enables monks to levitate.

A harrowing trail up a mile-high mountain.

Hidden behind musical flora and forgotten for over a thousand years, this cave is now a neon dream.

Two ancient Buddhist temples crown this dramatic rocky pinnacle.

A progressive LGBTQ hub offers dancing, HIV testing, art, and more.

Discovered after draining a local pond, these ancient man-made caves are still a complete mystery.

This terrifying glass bridge on the side of a mountain cracks as you step on it.

This short pedestrian span is also known as the "Fairy Walking Bridge" because it looks almost magical.

At nearly 1,000 feet long, this astonishing glass suspension bridge is one of the longest in the world.

Snow-capped peaks, colorful waterfalls and stunning vistas on the edge of the Himalayas.

One of the world's largest ice festivals dazzles visitors for over a month with radiant sculptures and carvings.

This incredible Chinese theme park may be the largest bootleg in history.

China’s breathtaking futuristic library is lined floor to ceiling with fake books.

Mirrored floors and arched shelves create the illusion of an infinite tunnel of books.

A part of the world's largest marsh seems to be growing bright red Martian grass.

This psychedelic tourist trap is a leisurely descent into madness.

A total of 999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.