Krispy Kreme got its delicious start in Atlanta at 295 Ponce de Leon Avenue NE in 1965. The shop is still operational, complete with a “hot now” sign.
The closest MARTA station is the North Avenue station on the red/gold line. It is a direct 11-minute walk to Krispy Kreme (view directions and map) or you can board bus 2 or bus 102 at the station to catch a ride. It is free to transfer to the bus from the train.