"We Seceded Where Others Failed."

A local landmark with generations of spraypainted messages, and more being added each day.

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

A small poultry graveyard in the courtyard of a popular Key West watering hole.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

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

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

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

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.

A monument celebrating the idea of reaching inaccessible places.

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

A humid oasis combines recreation with exploration in a unique underwater cavern.

The only Florida state park with publicly accessible caves.

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

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

Drink a Guinness under the wings of Reagan's retired Air Force One in his presidential library.

A sprawling maze of used books piled from floor to ceiling.

Launchpad for the US military’s dead mouse operation to battle millions of snakes.

These boots are made for selfies.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.