Impressive sink holes fill this untouched old-growth forest in the Bahamas.

This replica of an 8th century burial ship actually sailed to Norway before returning home to Minnesota.

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

This 16-foot, intricately detailed model of the Gearing-class destroyer has been called the most detailed model ship ever built.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

The highest point in Virginia can only be reached by passing through ponies and flowers.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

The only road through the heart of Glacier National Park.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

The highest bridge in America was built for an almost unnervingly small amount of money.

The world's largest rotating world.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

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

A glittering South Asian anomaly in a wealthy Los Angeles suburb.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

This massive redwood tree has a hole in the base big enough to drive through.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

Quite simply the largest tree in the world (by volume).