Modern Atlanta is sponsoring several tours and lectures in May that should be of interest to anyone who enjoys modern design. Check out the site...there are all kinds of activities!
http://modern-atlanta.org/
A tour of several modern structures takes place on May 10th and 11th with a kickoff party at the Mason Murer Gallery on the 9th.
http://www.masonmurer.com/
Some of the homes are located in Serenbe, a new community in Palmetto (think of the quality of Glenwood Park) south of the airport.
http://www.serenbecommunity.com/home.html