That’s what kids used to do before screens started taking up all their time – and they still do, given the opportunity. Landscapes designed for play are for all ages – a climbing structure can include lower, easier attachments as well as more difficult ones; paths and trails can accommodate joggers and mountain bikes as well as tricycles and scooters.
Landscaping for play can be a matter of sculpting the terrain so that it serves multiple active play purposes (hills can be for climbing, for running up and down, or for rolling and sledding). Or it can involve sophisticated play elements made of modern materials (a manufactured “tree swing”, a fancy zip-line, a luge-like slide).
Whatever the methods and materials, active play is an important part of family life, and including elements that will encourage active play for children and exercise for adults is an important part of landscape design.