An "outdoor playground" refers to an area or space outside, usually equipped with various recreational equipment or facilities, where children can play and have fun. Full definition
Furthermore, an outdoor swimming pool for adults and another one for children, both surrounded by a garden, as well as outdoor playground for children are also available. (charming-accommodation.com)
It is recommended however, that children also use outdoor playground equipment as it encourages a full body workout. (qaeducation.co.uk)
That's why our 10,000 square foot dog daycare and dog boarding facility features a huge outdoor playground, complete with tunnels, slides, and even a splash pool! (pawsplaygrounds.com)