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

Intertwined, interspecies trees which locals believe can grant boons to lovers.

Bronze footprints mark the path where a civil rights leader tried to march in peaceful protest before being knocked unconscious.

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

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

The graves in Florida's oldest Black cemeteries are marked with shells, stones, and mementos of the deceased.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

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

Gutted airplanes slowly decay in a Florida field.

St. Augustine's record-setting narrow street was designed to protect against pirates.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Location of a reliquary containing bone fragments of 18 saints.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.