The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

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

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

It's a pretty creepy lock-up.

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

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

This abandoned bridge is now a favorite haunt for graffiti artists.

The abandoned bathhouse is all that remains of the hot springs considered Florida's original tourist attraction.

The ruins of a Florida miracle spring resort make it seem like a wonder that this was ever a health spa.

This fairytale-inspired cottage was created by a university literature professor.

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.

Working compound meant to allow visitors to reclaim the values and traditions of the past.

The only Florida state park with publicly accessible caves.

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

Ancient church constructed with a special wood that preserves prints from the past.

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.

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