Hello. I have accommodations this weekend at the Holiday Inn Gwinnet Center (6310 Sugarloaf Pkwy, Duluth, GA) but would like to visit the sights of Atlanta. Is it possible to get around to the tourist venues like CNN Studio, MLK Birthplace (Natatorium), Cyclorama, etc. without using a car? I would prefer to avoid the busy interstates in Atlanta and was wondering if the MARTA is accessible from Duluth. Thanks very much.