This army of concretions is an unexplained geological phenomenon unlike anything else in the world.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

An untouched lava tube accessible to the adventurers.

What many consider the original prime meridian and westernmost point of the old world.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

Every year, the town of Menton, France, turns lemons and oranges into giant sculptures depicting windmills, dragons, and more.

This mosque was based on Sub-Saharan Islamic architecture and created for the Senegalese Tirailleurs.

If Hello Kitty were Mickey Mouse, this would be Disneyland.

A reconstruction of a classic mansion on the island of Delos was designed for a historian and archaeologist.

Nearly every wall in this French villa has been "tattooed" by artist Jean Cocteau and other famous painters.

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

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

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

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.”

This doorless 20th-century elevator doesn't stop or slow down.

A mocking tribute to the past and modern leadership of Prague.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

This spooky statue sits outside a famous Prague theater.

A surreal statue honoring Prague's favorite literary son.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.