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

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

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

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

The ancient settlement attracts tourists from all over looking to learn about the Chinese vision of the afterlife.

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

A sacred mountaintop temple offers a fine cup of tea to visitors who can survive the journey.

270 million year-old forest of stone.

Not one, not two, but three natural bridges remain in this captivating spot post-sinkhole.

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

For those with no fear of heights: a skywalk 4,700 feet up on a Chinese mountain.

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

Take a giant yellow bird cage to the top of Elba's highest mountain.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

A 16th-century horror show built in a lovely Italian garden.

A musical instrument played by the sea.

The "dragon babies" of southeastern Europe.

Each year melting snow turns these Austrian hiking trails into scuba zones.

A cablecar-station-turned-revolving restaurant with 360-degree views of the Swiss skyline.