Natural Wonders

Limestone caves with spectacular showcase chambers.

An island in the middle of a lake, in the middle of a volcano, in the middle of a bigger lake, in the middle of a bigger island, in an archipelago, in the Pacific Ocean.

A wonder of natural limestone formations etched by millions of years of natural interaction between rainfall and rock and air.

Every autumn, this hillside is ablaze with red summer cypress.

The youngest volcano in Central America.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

An Australian lake whose pink hue defies scientific explanation.

A lake in the middle of the tundra of Quebec is said to be the purest freshwater lake on Earth.

One of the final concrete ships built before World War II is now a crumbling breakwater.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

Even King Tut was intrigued by the glass of the Great Sand Sea.

The Yonaguni Monument, a natural formation or the Japanese Atlantis?

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

A canvas of crops grow from vibrant red soil in this terraced farmland.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

An extraordinary mixture of natural beauty and man-made phenomena.

Named after the Goddess of Harvests, Annapurna is the deadliest member of the Eight-thousanders club.

A mysterious lake provides fresh water without any source, somehow restoring itself from atop its mountaintop perch.