Many of the murals covering this sleepy Florida town hide some sort of intentional error.

Florida's first Dark Sky Park is a haven for wildlife and stargazers.

Used as a military post in three different engagements, this fort has remained incomplete and unfired upon for nearly 200 years.

This hauntingly beautiful stretch of Florida coastline is covered in sun-bleached trees.

It's a pretty creepy lock-up.

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

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

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

One of the oldest, tallest, and most haunted lighthouses in America.

A secret, rocky playground hidden amongst the plain white beaches of the Florida coast.

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

Part of a highway network meant to connect Miami to Montreal, this 10-mile stretch of road made from red bricks is still around 100 years later.

The ruins of a once-thriving sugarcane plantation that was burned in the Second Seminole War.

Public works and national defense project meant to carve a canal all the way across the state of Florida.

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

Of course the guy with the first patent for an ice machine lived in Florida.

The only Florida state park with publicly accessible caves.

This state park was once an important Native American cermonial center.

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

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

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

This impeccably preserved farmstead is a time capsule of a Pulitzer Prize-winning novelist's life.

These mysterious ruins are hidden amid this sleepy coastal city.

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