We highly recommend exploring the campus of UofSC if you've never been there. The historic Horseshoe is one of our favorite places, and is also where we got engaged!
The Soda City Farmers Market is one of the best things to do in Columbia on a Saturday. Coffee, pastries, international food, antiques, pottery, flowers- everything you could dream of and more is there. And as a bonus, if you want to go somewhere with unlimited dogs to pet, this is the place!