The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

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

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

The world's longest known cave system.

The bespectacled, cocktail-sipping pachyderm is a strange but fitting liquor store mascot.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

A statue high in a hill that represents how Buffalo Bill got his name.

This spectacular track has run continuously since 1882.

Like a kitschy mirage in the Mojave, this eatery serves up classic 50s-style diner meals and a dinosaur sculpture garden.

A collection of haunted objects and macabre oddities under one roof.

The remains of this hell for leather wild west town can still be found in the Arizona desert.

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

A clear blue swimming hole with hidden caves, still unexplored.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

A small car graveyard sits in the shadow of the famous Cadillac Ranch.

The Grand Canyon of Texas.

These half-buried combine harvesters just off Route 66 are an homage to the Cadillac Ranch.

The surprising home of the iconic Santa Monica Pier Ferris Wheel.

An immersive art experience built by local arts collaborative, Factory Obscura, in the building formerly known as The Womb, a psychedelic arts center founded by the frontman of the Flaming Lips.

Elvis's own personal tropical hideaway.

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

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