Massive rock sculptures formed during the time of the dinosaurs still stand undisturbed.

Named for the DeFoe novel inspired by a stranded sailor, this island is known for its rare plants and extreme beauty.

Mineral springs believed to hold therapeutic properties draw in visitors from all over.

One of Chile's most active volcanoes is riddled with beautiful caves.

A toxic lake near a volcanic caldera that is home to flamingos and other life.

A fantastical group of cliffside stairways, bridges, and twisting paths carved out of stone provide a surreal coastal hike.

Thousands of bats stream out of caves every night on the edge on Thailand's second largest park.

Large rock high in the mountains of Yunnan that is naturally shaped like a chair, complete with arms.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

World's largest cave was only discovered in 1991, and now offers tours to the public.

Stunning wetlands ablaze with pink lotus flowers.

A white Buddhist temple with a golden restroom.

More than 200 statues filled with cryptic symbols give this park spot an aura of horror vacui fantasy.

Believed to have once stored either human remains or rice wine, thousands of mysterious stone jars lie in ruin.

Clusters of huge boulders in the Australian Outback.

Microscopic fossils suggest Australia may be the birthplace of sulphur-based life forms.

A mud volcano in Indonesia spews out 50,000 cubic meters of mud every day.

A real-life "hobbit" cave in Flores, Indonesia.

Visitors can swim with vicious predators in Crocosaurus Cove's plastic daredevil enclosure.

Have fun at the world's first Buddhist waterslide park.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

A unique beach made of a myriad of multi-sized pebbles.

Bohol's mysterious brown hills.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.