Fort Jackson - guarding the river approach to Savannah from the Atlantic, was started during the Revolutionary War. It was rebuilt and refined in the years prior to the War of Unwarranted Northern Aggression. Its construction was at one time supervised by a young engineer named Robert E. Lee. My sister says we are kin to him. You can see the National flag of 1861 flying above the main building. Confederate National flag, that is. As Sherman approached Ft. Jackson, it was abandoned, as the lesson of Ft. Pulaski down the river was taken to heart. Ft. Pulaski was pulverized by a new weapon, rifled cannon, and these forts became instantly obsolete.
Here is the lighthouse on Tybee Island, just outside Savannah. They have kept it up fairly well. Behind the photographer is the beach and another type of fort that became obsolete soon before WWII, and was left unfinished for that reason.
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