It is a 45 min drive, but there is so much to do from Art museums to aquariums, Chattanooga has it all. We have had dates all over. There is also the Chattanooga choo choo which is a very cool experience.
We went here to celebrate our one year together. It is the largest underground lake in the US. The hike through the cave is pretty mild, and there is a boat ride at the end. It is about an hour from the venue.
This is where Dale proposed! It is a good little hike. It is closer to Spring City than Georgetown, but if you are in the area for a while its worth the visit.