Thanks for posting. Great pictures.
Ft. Pulaski is definitely worth the visit. It is far more intact than Ft. Sumter and it's neat to walk around the outside and view the damage.
One kind of interesting thing about that National Park that I find interesting is that they've contracted with someone to make 'plastic' cannons to sit on the top level of the fort. Whoever did them did a nice job as they look quite real. I'm sure the purest can point out mistakes but they were probably cheap (although I'm not sure the government can buy anything cheap), light and helped give the fort a more finished look by having some large guns up there.
I'd also recommend a short ride across the bridge to Tybee Island to stop and look at the batteries that fired on it. These are found on your left as soon as your cross over onto big Tybee Island. While not park property you can see the remains of the emplacements along with a nice view across the water to their target, Ft. Pulaski, and the old lighthouse that sits out in the water.