The Fabulous Fox Theater is a wonderful place to visit if you care for broadway. Home to Brodway of Atlanta, it gets all the touring shows and is absolutely gorgeous. You can get tickets through ticketmaster. It also shows old movies sometimes.
The Atlanta Aquarium is amazing!! It is a great place for kids. It is also located next to the brand new World of Coke complex, which is also awesome. You can even sample different kinds of coke from all over the world!
The CNN Center is a great place to get a quick bite, and has reoppened it daily tours. It is also attached to Phillips Arean, a large concert/hockey venue. The CNN Center is located right on Centennial Olympic Park, and next door to the World Congress Center.
The World of Coke was alright, the Aquarium is awesome, a employee stopped me and a buddy in the parking garage and sold us tickets to get in for half the the price they were at the entrance which was way cool!!