This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

Hot springs monkey spa in the middle of Hell's Valley.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

A student driver's nightmare.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

This Manchester laundromat is hiding something.

This weekly market in the remote oasis city of Hotan still has the atmosphere of the old Silk Road.

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

The highest monastery in the world operates a tiny guesthouse with doors open to all.

This quiet area of Yunnan Province annually transforms into an unbelievable sea of yellow flowers.

The largest statue in the world towers at 420 feet high atop another 66 feet of pedestal.

An out-of-place slice of France, smack in the middle of Shanghai.

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

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

Massive series of 45 caves and over 51,000 sculptures carved from cliffsides in China.

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.

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

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

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.

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