Rainbow-hued in the summer and crystalline in the winter, this salty lake has inspired battles, temples, and plenty of awe.

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

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

The tallest stationary dunes on Earth also happen to sing.

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

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

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

A complex and beautiful system of rice terraces covers a million acres over the mountains.

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

270 million year-old forest of stone.

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

A canvas of crops grow from vibrant red soil in this terraced farmland.

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

Intensely colorful calcite pools in Southern China.

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

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

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

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

A fifth-century temple improbably built into the side of a cliff.

This natural history museum houses one of the world's largest rat kings, a terrifying jumble of tangled rodents.

Nestled within a German forest is an intriguing, growing rock.

Take a walk in a recreation of ancient Rome.

The resting place of 18th century German mummies.

The non-native bovine herd was brought in to help conserve these Berlin wetlands.