Kingswood Centre, Basildon UK

I haven't been there, but it seems very intact. Here's what's said about it in Osborn and Whittick's 1963 The New Towns: the Answer to the Megalopolis (pp. 258-9):

'Following one footpath in an easterly direction one comes on an extensive lawn sprinkled with trees and containing in one part the various odd objects of a children's playground. Some of the houses front on to this open space, others have their small walled or white-fenced gardens adjoining it.'