We used to have playgrounds like that. My favorite playground as a kid had metal slides, a merry-go-round that we used to have fun throwing kids off of by spinning it at high speed, and this gigantic metal turtle that would get so hot in the summer sun that it would burn you. My elementary school had monkey bars at varying heights... etc etc..

But last time I checked that playground replaced everything with bulky plastic toys and one of those boring wood castle things with plastic slides