Looking for a fenced in park/play area for my son

I am looking for a safe and closed in area for my 3 year old son to play that is close to our house. The reason being that I’m a single parent currently dealing with a serious spinal injury and I am awaiting surgery. My son has autism and has recently started running away at any chance he gets. He’s in therapy but has no sense of danger and I’m having a really rough time being able to chase after him. Our yard isn’t safe for him but I don’t want to keep him inside all the time either. I called a daycare I saw on Wellington Cresecnt with a fenced in yard and asked if we could play there on the weekends but they said no. Wondering if anyone knows of a fenced in park or play area around Crescentwood/Wolseley or River Heights? Suggestions are greatly appreciated.