Atlanta's best beer is found in Decatur, so you should also expect one of its best beer festivals to also call the Square home. The Decatur Craft Beer Festival is a rare opportunity to sample the best international and local beers on a beautiful afternoon. More than 100 different varieties will be offered, as well as live music on the community bandstand and food from local restaurants. Naturally, you must be 21 or older to attend. Check for ticket availability as this event tends to sell out.