Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

The largest source of fossilized insects anywhere.

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

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

One street divides a single town that stands in two U.S. states.

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

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

This North Carolina store preserves a historic moment in America's movement for racial equality.

This nine-story building can be played like an instrument.

Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

This now-deactivated naval base defended the Florida coast for centuries.

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

At the time of its completion, it was the tallest dam in the world.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

This rustic old building is said to be the most photographed barn in America.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.