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

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

When you can't get to the Pacific, just go to Florida.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

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

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

A haunted hill that supposedly defied gravity.

A mysterious castle built as a monument to lost love.

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