North Avenue is an underground subway station in southern Midtown Atlanta, GA, serving the Red and Gold lines of the Metropolitan Atlanta Rapid Transit Authority (MARTA) rail system. The station is named after the nearby North Avenue. The walls are made of white tile and painted with a mural of green hills, a blue sky, and clouds. The murals were designed by Gordon Anderson while he was a Professor of Art at Georgia State University. It is among the busiest stations in the system with an average of 15,000 boardings per weekday. The station has a direct entrance to Tower Square and is actually located in the skyscraper's basement.