The American Institute of Architects Atlanta will host a free BeltLine Bus Tour as part of its AIA Tour Series on Saturday, Sept. 19. Clear your afternoon for this one, since it runs from 2 – 5 p.m. The tour will depart from the Inman Park MARTA station on DeKalb Avenue. Those who want to go should RSVP by Sept. 5 to AIAatlantaTours@gmail.com . Seating is very limited and those who don’t arrive by 1:50 p.m. will have their seats given to standby tour guests. The Beltline project will combine green spaces, trail, transit and new development along  22 miles of historic rail segments that encircle the urban. More details and information about other upcoming tours at www.aiaatlanta.org.