Centennial Oylmpic Park
This a beautiful, huge park that's great for letting kids run around. There's walking paths as well as dining and shopping.
Atlanta Braves Game at Truist Park
The Braves were in town, so we got to enjoy a game as part of their 2021 Championships season. The stadium is relatively new and very nice, provided that the weather cooperates.
Mary Mac's Tea Room
This is a must while you're in Atlanta. Don't let the name confuse you, this is a southern dining restaurant. Make sure to answer in the negative when they ask if you've been there before. You get a special appetizer and a brief history of the establishment. A favorite of the Carters, the restaurant has been visited by hundreds of celebrities and socialites, and you'll find their photos dotting the walls of the multi-room establishment.
Martin Luther King Jr. National Historical Park
Here you can see MLK's Birthplace, the memorial, the MLK Museum, and Historic Ebenezer Baptist Church
All of these are on the same street and within walking distance. If you're short on time, the home, church, and memorial can all be viewed outdoors. However, there are tours of the home, and you can do a self-guided tour of the church at certain times. The museum was closed due to COVID during our visit, but seems like an excellent stop.
Ponce City Market
This former Sears building has been converted into a multi-story food court. It also has apartments and shopping. There are dozens of establishments to choose from and common areas to eat.
Things we didn't do that you might want to look into:
Jimmy Carter Presidential Library & Museum: Closed due to COVID when we were there, but high on our list next time we're in ATL.
College Football Hall of Fame: Not quite our speed, but might be of interest to some.
The Dwarf House (the original Chick-fil-A): This was being mostly rebuilt while we were there.
The Original Waffle House