One of the oldest living oak trees in the Southeast.

Thousands of glyphs created by an unknown culture decorate the rock formations of this canyon.

This cairn marks the only place where Central European Time, Eastern European Time, and Further-eastern European Time meet.

These hellish-looking cliffs in the Canadian Arctic have been burning for centuries.

For one month, the fields and skies of Gibbon, Nebraska, come alive with one of the largest gatherings of sandhill cranes in North America.

In 1967, murder and mayhem disrupted the tranquility along this quiet stretch of Old Route 66.

On the side of a remote mountain, a stone face bearing an inscription of mysterious origin.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

A life-sized recreation of the megafauna that once roamed this region is a feature at the birthplace of American paleontology.

In one of the hottest parts of the Mojave Desert, shallow bedrock forces the typically dry Mojave River to the surface in this canyon, providing a vital oasis for humans and wildlife.

The Grand Ole Opry's big voice came from a small home in rural Virginia where she was eventually buried.

The only U.S. Senator to die on the field of battle is buried in San Francisco but memorialized at Balls Bluff Regional Park.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

A rancher expanding a natural spring for his cattle came up with bones – lots and lots of them.

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

These hooded graves are the only of their kind in the United States.

A grove of "candelabra redwoods" deep in California's Lost Coast.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

A world-class observatory in the California desert.

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

This “living museum” at UCLA exhibits thousands of plant species from all over the world.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

This quirky roadside attraction dives into the many theories surrounding North America's most infamous hairy cryptid.

Golden Gate Park's historic collection of plants.