A newspaper editor turned this abandoned island into a tortoise nature preserve that's now the world's smallest national park.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Resonant stone, that has been played since prehistoric times.

A mysterious light in the wood, rumoured to be the the ghost of a railroad brakeman.

China's most famous acrobatics act.

A fiery crater has been burning in the Karakum Desert since 1971.

A geological oddity topped with a 2,000-year-old pagan temple.

Mysterious hillside with a continuously burning natural fire.

An isolated dive site teeming with cnidarians.

On La Gomera, "Silbadors" communicate in a 4,000-word language of whistles.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

Each year melting snow turns these Austrian hiking trails into scuba zones.

An exquisite tunnel of cascading flowers.

Bring your hiking shoes, wool socks, and thermal underwear for a stay in these cozy forest huts.

A musical instrument played by the sea.

Submerged trees jut ghost-like out of an idyllic turquoise mountain lake.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

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

An apocalyptic seismic event creates a deadly chain reaction that ends with a 6-mile long lake developing within weeks.

Mount Nyiragongo has erupted at least 34 times since 1882 and is home to the world's largest lava lake.

Rising from the sea like a stone monster.