This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

Water still flows through the oldest Spanish aqueduct in America.

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

Waterfalls, rapids, and top-notch swimming spots await in this densely forested corner of the Smokies.

A wonderful display of arts and crafts handmade by local artisans in the Southern Appalachians.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

A monolith replica monument of Jean Ribault commemorating the landing of the French in the New World.

This replica of a 16th-century French settlement memorializes one of the earliest attempts at a European settlement in North America.

This hauntingly beautiful stretch of Florida coastline is covered in sun-bleached trees.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

The first declared National Monument in the United States.

Once the smallest park in the national system.

Foragers once flocked to this big beautiful bayou to hunt for pearls.

A museum and gift shop in a small Illinois town commemorates the work of E.C. Segar and the local figures on whom he based his characters.

The hometown of Popeye's creator is littered with a growing collection of granite cartoon characters.

Each winter this underground cave forms a dazzling ice palace.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

One of America's largest retail chains got its start in one of its most remote rural destinations.

A dazzling display of red rocks weathered into spires and hoodoos.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The Old Mill shown in the opening credits of “Gone With the Wind” is actually fairly new, and was never a mill at all.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...