Fort Jackson sits on the site of an earthen fort built during the Revolution. A brick fort was begun to replace it in 1807, in order to defend the port of Savannah from a possible naval assault by the British or French, and was it was used during the War of 1812. Between 1814-1860, the fort was expanded and made stronger, adding larger cannon, thicker walls, and more enfilading ports. During the Civil War, Fort Jackson, along with an ironclad gunboat and a larger ironclad floating artillery platform, formed a second line of defense for the port of Savannah, behind the larger and more heavily armed Fort Pulaski down river. Fort Jackson remained in Confederate hands until 1864. After the War, the Government started to reinforce the Fort further, but soon realized that, nothing could make it strong enough to withstand late 19th c. artillery. The Fort has been preserved as it was in 1870. There are signs describing when each part of the brick fort was built, exhibits of rifles used from 1800-1870, and original rooms in the Fort walls showing how artillery was operated and how the soldiers were housed. Fort Jackson is a State of Georgia property. When we visited, an extremely engaging and knowledgeable young woman park ranger explained to a group of under 10 year olds how a cannon was loaded and fired, then got everyone to safety and fired the cannon as a demonstration; not 10 minutes later, she was on the other side of the Fort teaching a class of junior high students how signal flags were used during the Civil War. I have read a fair amount and visited many other historic forts, but I still learned something from each of her presentations. The Fort is only 2-3 miles from the heart of historic Savannah, and you can see the whole Fort complex and the demonstrations in an hour. If you have any interest in history, you should make time to see Fort Jackson.