A tidal bore with its own festival.

The world's largest natural arch was forgotten for over 50 years after its discovery.

The ancient remains of this natural fortress can still be found along the Silk Road looking surprisingly preserved.

Are these prehistoric metal pipes evidence of alien plumbers? Nope, but they are amazing nonetheless.

No one is exactly sure why over a hundred lakes have formed amongst the tallest sand dunes on Earth.

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

This highest bridge in the world spans such a great chasm that it had to be established using rockets.

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

A lush desert oasis in the shape of a narrow crescent.

These layered sandstone mountains in China look like they are made of pressed crayons.

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

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

Why walk on this historical site when you can zoom down instead?

Where the Great Wall of China meets the sea.

Rock-cut caves and 7,000 Buddhist sculptures carved into the nearly sheer face of a sandstone mountain.

A natural arch offers panoramic views of Yangshuo's karst hills.

This Tang Dynasty behemoth is the biggest Buddha in the world.

A tunnel dug through the side of a mountain by hand provides convenient yet death-defying access to a small village in China.

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

The tallest stationary dunes on Earth also happen to sing.

This abandoned fishing settlement may well be the greenest village in the world.

The latest in a series of long glass bridges suspended at terrifying heights.

This psychedelic tourist trap is a leisurely descent into madness.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”