For The Most Accurate Directions, Please Use Gps. Here's A Quick Summary: From Hartsfield-Jackson Atlanta International Airport, Get On I-85 N And Follow It Along With I-75 N Towards Downtown Atlanta. Take Exit 246 For Central Ave Sw. Continue On Central Ave Sw, Then Take Forsyth St Sw To Reach 20 Marietta St Nw. The Drive Is About 16 Minutes (10.3 Miles) Under Usual Traffic Conditions.