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

Florida castle built with aluminum printing plates.

Ruins of a Carnegie family mansion on Cumberland Island.

A swamp that was the site of prehistoric water burials also managed to preserve its corpses for millennia.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

The ruins of a creative scholar's fantastical unfinished sanctuary act as his massive gravestone.

This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

Georgia's first brewery is also one of its oldest surviving buildings.

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.

Gutted airplanes slowly decay in a Florida field.

Jacksonville's highways rendered this century-old grammar school unusable.

This picturesque ghost town is located on the banks of the Suwannee River.