It is set on a manicured parcel, its street-facing sides lined by a brick retaining wall topped by a low white fence.
The main house is rectangular, two stories in height, built of stuccoed brick with a hip roof capped by a small circular cupola.
The main facade faces west toward Clarke Street, and has a four-columned Greek temple portico projecting at its center.
Governor Joseph E Brown led Georgia through the Civil War while living in the Mansion.
Georgia's Old Governor's Mansion's mission statement is "to care for, collect, interpret and exhibit items (including artifacts, structures, and gardens) that illustrate the history of the site and its inhabitants during the years the Mansion was the official residence of Georgia's governors (1839–1868).