Saltwell Park, Gateshead (lovely little gem this place, worth a visit if you're ever in the region. Short walk from where I grew up so I've always taken it for granted, but I can honestly say I've never seen a nicer public park anywhere in this country. When I was a kid they used to do pony rides around the lake, and there's a hedge maze and a kind of petting zoo thing... when I was very young they even used to have a disused passenger plane out on the green and you could go up and slide down the emergency exits! No idea how they managed to get it in there.)