I just got back from a weekend in Atlanta, and I go to Atlanta every other year or so to see a Braves series.
Must sees:
World of Coca-Cola: Adjacent to Underground, this is a blast!
Turner Field/Braves Game: See the "Real America's Team", Turner is definetly an underrated stadium. Living close to Camden Yards, I definetly prefer Turner.
Phipps/Lenox Malls in Buckhead: If you're from a city without major upscale malls, you will be blown away. Richmond just opened two similar malls last year, but these places were still nice. Parisian, Nordstrom, etc. are nice to look at but aren't very shoppable.
ESPN Zone (Buckhead): A great place for lunch and then big arcade games. Ate lunch next to Atlanta Brave Mike Hampton on Saturday!
Overrated:
Underground: Basically a rundown mall slightly below ground. I have never understood the fascination. As I was walking towards the Braves shuttle through the Underground last weekend a teenage girl pulled a gun on some random guy she got into an argument with...
The Varsity: All of my friends seem to love this place but it's not very good. I didn't get much of the famed smart talk from the employees, and the food was overly greasy.
This past trip was the first time I used the Marta Bus/Train system and it was amazingly efficient compared to the lousy mass transit system in Richmond. For $1.75 I could ride from the Northern burbs to Turner Field. Much cheaper than parking and gas. Marta has a train station in Doraville.