Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

This Parisian fountain is a little bit fantasy and a little bit nightclub.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

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

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

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

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

The world’s tallest outdoor lift stretches along the stone pillars that inspired the floating mountains in the movie “Avatar.”

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

A harrowing trail up a mile-high mountain.

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

Intensely colorful calcite pools in Southern China.

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

Unique geological formations in China, featuring some suggestive shapes.

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

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

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

A bright turquoise river cascades beautifully down stepped terraces in southern China.

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

One of the word's deepest gorges is also tied to a fantastic legend.

The largest underground church in Europe.

Historic medieval fortified city in southwest France.

A Gothic cathedral created from volcanic rocks.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.