active activities adults adventure children children’s-playground climbing climbing-nets climbing-ropes equipment families frame fun greenery ground kids leisure light nets netting park parks play playground playing public roped ropes safety sand sandpit secure shade shaded shady shapes suburban sunlight sunshine supervision trees views adventure-playground colors colours open parkland peaceful perspective plants posts quiet relaxing shadows textures tranquil boy boys climb construction dynamic jump kindergarden kindergarten line lines net pattern patterns red rope sports string strings texture twine web