The longest living non-clonal organisms on Earth.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

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

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Colorful Native American paintings are hidden within this small cavern.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

The fossilized remains of ancient California redwoods.

Ancient human, animal, and geometric figures drawn in the earth.

Massive prehistoric mammals used these stones as oversized scratching posts.

An extensive collection of ancient Egyptian artifacts and mummies.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

A mountain range on an active U.S. Navy base hides thousands of mysterious prehistoric rock carvings.

Limestone caves with spectacular showcase chambers.

One of the largest, oldest, darkest, quietest motel rooms in the world.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

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

Eons ago, a rushing lava river formed this pristine passage through solid rock.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

Research missiles and rainbow auroras at the world's largest land-based rocket range.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

This junkyard made over as a theme park is the "Most Alaskan place in Alaska."

Colorful boxes placed over the dead are left to rot and crumble.

The cultural center preserves the history of the Tlingit tribe, who have lived in this Alaska village for more than 10,000 years.