A clear example of the process of erosion in action.

Tubing through a cave lit with glowworms is a magical underground experience.

A grotto replicating one of the world's most famed Marian apparitions sits across the ocean from the original.

A pocket of Buenos Aires with an unusually high concentration of psychotherapists.

Bible stories are brought to life with gloriously cartoonish kitsch in this South American theme park.

A vast necropolis where you'll find the elaborate mausoleums of Argentinian tango stars.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

A bright little alley in La Boca is a part of tango history.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

The world's tallest palm trees look like the whimsical kind of plant you'd find in a Dr. Seuss story.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

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

Thousands of locks professing undying devotion line the metal chains of Lotus Peak.

This short pedestrian span is also known as the "Fairy Walking Bridge" because it looks almost magical.

A harrowing trail up a mile-high mountain.

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

The once highest point in China blends symbolic design with a kick of adrenaline.

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

The most famous location in China was home to whole dynasties worth of imperial rulers.

This South Pacific volcano has been blowing its stack for over 800 years and is said to be home to a cult leader waiting to be reborn.