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

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

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 world's largest occupied bat houses hold hundreds of thousands of flying mammals.

The only Florida state park with publicly accessible caves.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

A giant 400-acre preserve in North Florida for displaced wolves.

A haunted hill that supposedly defied gravity.

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

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

A mysterious castle built as a monument to lost love.