I also find St. Augustine and Savannah excellent choices. If you desire both cities have trolley systems that you can take. They are guided tours with explanations at every stop. If you get off and wander some of the sights at a stop, do that then go back to the stop and get back on the next trolley and keep going. They have all day passes. If you go to one and then when you get to the next city take the same trolley line and you will get a discount on the second one. Very enjoyable way to see both cities and saves some of the walking. In Savannah make sure to go down to the street right along the river. Good Luck and Have Fun.