Georgia Aquarium
I discovered that Atlanta is pretty mellow and interesting for a smaller large town. It surprised me that it is smaller than Indianapolis. Downtown is quiet and not crowded, although that could be a function of COVID.
The GA Aquarium is lovely. One portion is a multi-storied aquarium hosting sharks, large rays, and whale sharks, among other multitudes of fish. I am told one can scuba-dive in the tank, which I fully intend to do in the near future.