A replica of one of the more than 15,000 civilian lookout towers that lined the U.S. coast during World War II.

Owned by no one but beloved by all, Brownie was a good dog.

Strange beasts lurking in a garden are all that remain of a quirky, short-lived theme park.

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

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

An octet of classic chrome trailers speared into the ground act as a tribute to the silver bullets of the open road.

Dedicated to the victims of one of the deadliest hurricanes to strike the United States in recorded history.

This small island was the first National Wildlife Refuge ever created in the United States.

Flip your own pancakes in this old sugar mill within a Florida state park.

A unique collection of diving equipment spanning antiquity to the present day.

Electrical pylon in the shape of Disney's beloved mouse.

Mariners once used this prehistoric landfill as a navigational landmark.

The highway's southernmost spot is a beloved local attraction.

The museum chronicling a treasure hunter's dream, fulfilled.

The largest freshwater lake in the Florida Keys.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

A museum preserving one company’s history of preserving food.

A historic presidential getaway on the continental United States' southernmost island.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

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

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

This lush Florida island is home to the ruins of a crooked ship breaker's tiny empire.

"We Seceded Where Others Failed."

This 140-year-old beacon off the Florida Keys marks the wreck of a Navy ship that once roamed the Caribbean hunting pirates.