Called a sliding pond in queens too.Also we had big kid swings, they had slippery stainless steel seats and no chains,just long bars with loops on them,hooked together,and these where really long swings ,very high. They were on cement,and remember kids slipping off them all the time. And kids walking past and getting clobbered when a swing came down on them. Monkey bars on cement too!Thank god city parks had first aid then.Cement pools with sprinklers in them,the pool never filled up,you ran into each other,everyone closed there eyes running into the strong water spraying.When the water wasnt on it was a dodgeball area,more first aid!!!!We all made it through these cement parks.