These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

An abandoned town is hidden in Great Smoky Mountains National Park.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A second generation sun-powered marvel lights up the night.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Hawaii’s largest cemetery rests inside an extinct volcano crater.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

The remains of the iconic train crash from the movie 'The Fugitive' can still be found rusting along the Great Smoky Railroad.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The record holder for the world’s largest peach.

This 19th-century building inadvertently preserved the handprints of its builders within its walls.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

Live long and prosper in Tennessee.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.