Get On I-75 N From Downtown Atlanta:-Head North On I-75 N For About 15-20 Miles,Take Exit 263 Toward Southern Polytechnic/Marietta: Keep Right At The Fork And Follow Signs For Ga-120 Loop West/Marietta.3. Merge Onto Ga-120 Loop West (South Marietta Parkway)Continue For About 2.5 Miles.4. Turn Left Onto Powder Springs Street Drive For Approximately 1 Mile.5. Turn Right Onto Gramling Street- 100 Gramling Street Will Be On Your Right.The Drive Is About 20-30 Minutes Depending On Traffic.