We will use design features and materials that are attractive, economical, and sustainable in the long run, and recognize that parks are a canvas for human activity. Ultimately, parks are for and about their users and, except in rare circumstances, are brought to life by the people and the activities within them. Therefore, park design should maintain the flexibility to adapt and change – to be places for play, exploration, gardens, art, thinking, running, informal games, room for creativity and improvisation – without getting in the way of their users. And, as they change, they should use materials that work well and remain sustainable for the long run. For example, native plant materials may require some time and care to become established, but will save money and create more attractive and hardy landscapes over the long haul. Good and flexible design, public safety, social space, and environmental quality should converge as we rehabilitate existing parks and contemplate new ones.