This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

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.

The pan man stands as a testament to the functionality of American cast iron cookware.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

This 13-foot smiling peanut in Georgia helped Jimmy Carter win the 1976 presidential election.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

In memory of the 110 victims of ValuJet Flight 592 that crashed in the Everglades.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

The smallest post office in the United States is no bigger than a broom closet.

A community of collapsing homes more than a mile out from the Florida coast.

Located within a historic park, the beacon is the oldest standing structure in Miami.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

Mariners once used this prehistoric landfill as a navigational landmark.

Despite being made of a seashell mortar, the crumbling remains of this historic Florida mill are still standing.

These mysterious ruins are hidden amid this sleepy coastal city.

Public works and national defense project meant to carve a canal all the way across the state of Florida.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

These ruins are all that remain of what a Spanish barrack that likely housed a quarry overseer, masons, and stone cutters involved in the construction of the Castillo de San Marco.

One of the oldest, tallest, and most haunted lighthouses in America.

Built around 1723, this is the oldest surviving home in the U.S.'s oldest colonial city.