There is a park round the corner from our house (no roads to cross, probably about 200 yards door to door but not visible from the house and on a different road). The park is like a kind of wild garden with trees to climb, lots of places to hide/ play hide and seek etc . Rural feel but we live in a town. What age would you let your NT DC go there alone without you to play? Would that be different with a sibling and what age/s in that case? (mine are 3 years apart) we live in a pretty safe area, and the park usually has people around in it, but not always.