One of the few existing, fully functional Showbiz Pizza animatronic shows.

The last intact steam engine factory in the United States.

This largely forgotten piece of Cold War history stands hidden in the woods just north of the Mississippi Gulf Coast.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

The highest point in Florida is still the lowest high point in the country.

Built following the War of 1812, this fort has withstood hurricanes for centuries.

An Alabama courtroom where two famous American authors played as children became the setting for a Pulitzer Prize-winning novel.

The 44,000-ton aircraft carrier was purposely sunk to create an artificial reef teeming with life.

Though nicknamed the “Russian Freighter,” this ship was actually sunk off the coast of Pensacola by the U.S. government in a top-secret operation.

Florida’s half-sized replica of the Vietnam Veterans Wall.

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.

The "worst battleship ever built" is enjoying a grand second act, submerged 30 feet in the Gulf of Mexico.

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

Alabama has a fiberglass Stonehenge. With apologies to Spinal Tap, this one is full-size.

Believed to be the oldest active college baseball field in America.

Founded by a man who called himself the greatest hunter alive.

This small hut in the middle of a parking lot was once the wooded sanctuary of the 'Hermit of Montrose.'

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

Come for the boats, stay to explore the intriguing assortment of art.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.