Rising from the sea like a stone monster.

A hand-built folk art installation covered with messages of God's love.

An Australian lake whose pink hue defies scientific explanation.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A trash dump made beautiful by nature's power.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

These fantastically named natural pools look like something out of a Scottish myth.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Hot springs monkey spa in the middle of Hell's Valley.

Dramatic river bend surrounds a natural red-rocked pedestal.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

Medicinal spa created with the discharge from a geothermal energy plant.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

An emerald-green grotto just a short trip from Austin.

Most-visited and most-photographed slot canyon in the American Southwest.

On the Oregon coast there is a natural hole that seems to be draining the sea.

A psychedelic labyrinth on the San Francisco bay.