From late November to early January, Cathedral Square is transformed into a Christmas wonderland with trees decorated by schools and other groups, and beautiful lights that sparkle through the night. It has plenty of benches, a small children's play area that include 4 swings (2 baby and 2 child) and a climbing structure, and free wifi! During the summer you can come here for the farmer's market and Jazz in the park. Look at the Cathedral Square link above to find current events sponsored by the East Town association.
You will need to pay for parking, and you can use coins or credit card at a central parking machine.
If you need a snack after playtime, I recommend you stop in at one of our favorite places, Classy Girl Cupcakes. It's located on Jefferson right across from the children's play area.