City Park in Antioch
While the playground itself is out in the sun, there are large trees boarding the playground that provide nice shady areas, and I often see kids go play around the trees if they need a break from the heat. Also, in the corner near the trees is a beautiful rose garden created by a gardening club that specializes in roses. Each type of rose is labeled, which helps folks like me who would never know they were different types without the little signs.
We don’t visit often on weekends, but when we have visited, we have never had any problem find a parking spot.