This has been identified as the “old courthouse” though I’m not quite sure of the context. Perhaps it was a voting precinct. The steeple suggests it may have been used as a church at some time.
Old Courthouse, Unadilla
Vanishing Georgia: Photographs by Brian Brown
Since 2008. A visual survey of Georgia's historic architecture and culture. 8,000 locations. 27,000 images.
Vanishing Georgia: Photographs by Brian Brown 
Born and raised in Unadilla, thank you for remembering…