the permeability and walkability of our towns and cities, providing well-designed green spaces for walking, promoting the needs of walkers as the central human experience of mobility and movement. We need to ensure our towns and cities allow us to do what comes naturally to us: afford us opportunities for lots of activity, as well as places to rest and recharge. Creating, engineering and defending walking places and spaces is the present and future challenge. Rising to it will enrich us all in more ways than we know.