Don't know what style sculpture you do,Sonnart, but I would do a sculpture of the shelter which stood there for many years until it was demolished recently.
It had four shelters with benches and, in them, I would put varying scenes e.g. a kissing couple, the elderly resting their legs, family eating a picnic, youths smoking on a sneaky fag, children running around the outside flags, playing hide and seek, with a dog somewhere enjoying their game.
All ages got pleasure out of this shelter, including me..
