Perimeter Mall is an upscale super-regional shopping mall[1] in Dunwoody, Georgia, just north of Atlanta, near the highway interchange of Interstate 285 (the Perimeter, for which the mall was named) and Georgia 400.It is at the heart of Perimeter Center, a modern edge city and neighborhood of high-rise office buildings, condos, restaurants, and shopping which spans the DeKalb/Fulton county line (just a few yards or meters to the west) into the city of Sandy Springs. The mall has a gross leasable area of 1,554,288 square feet (145,000 m²).[2] This makes Perimeter the second-largest shopping mall in the state of Georgia. Only the Mall of Georgia in Gwinnett County is larger.