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

The only Florida state park with publicly accessible caves.

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

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

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

This century-plus-old baseball park has hosted some of baseball's royalty and stands as the oldest sports complex in Jacksonville.

This park commemorates the birthplace and legacy of the brothers who authored a song that has come to be known as the Black National Anthem.

This phone booth-sized municipal building has been a piece of police property for more than half a century.

The bottle house obsession struck a Florida man in his retirement, and now he can't stop building.

Tucked away in the forests of North Florida resides a 19th-century lighthouse.

This 15-foot former Johnny Appleseed has given up his apples for donuts and coffee.

This picturesque ghost town is located on the banks of the Suwannee River.

The so-called "world's shortest river" is actually a window into a cave.

A home built with marble tombstones from the graves of 2,200 Union soldiers buried in a Virginia cemetery.

Ruins of a once-prized railroad station in New York.

Buffalo's abandoned concrete grain elevators are getting a second life.

For decades, this waterfall remained hidden because of an artificial dam.

This massive airship factory is so large that it has its own indoor weather.

But did the famous feminist and abolitionist ever really say those iconic four words?

Wisconsin's most celebrated export gets the royal treatment on I-94.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

A place to eat for on-the-run agents and espionage enthusiasts.

Statue dedicated to the star of an old television show.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.