Garnett is an elevated rail station on the Red and Gold lines of the Metropolitan Atlanta Rapid Transit Authority (MARTA) rail system, located in South Downtown. It has an island platform between two tracks. This station has three levels. It was opened on December 4, 1981. The upper level has an entrance from the street and a mezzanine that is about 3/4 the length of the platform below. The lower level of the station is another entrance from another street and there is a Greyhound Bus Terminal next to the station.
At the northbound end of the station, the subway is entered and there is a single interline connection track (X track) between the South Line (Red and Gold Lines) and East Line (Blue and Green Lines) between Georgia State and Five Points stations. Below the Garnett platform is a little-known dead-end storage track.
This station mainly serves South Downtown, Castleberry Hill, and as the main gateway to tourists visiting Atlanta by Greyhound.