If you are north of Atlanta, then I am guessing the Dillard, GA and The Dillard House could be a lunch drive / jump off point. Starting on GA-246 which becomes NC-106. You travel over Highland and then into Cashiers. A good stop is the High Hampton Inn in Cashiers.
There are plenty of waterfalls and views to be had.
You can extend the trip if you want to plot further up to Cades' Cove and take that nice circle drive.
North GA has quite a few fun spots to drive. Especially as you get more North. GA 9 North of Cumming toward Dahlonega, GA 53 between Dawsonville & 575, GA 52 toward Ellijay, GA 76, GA 5 toward TN, etc.