There is a current blog in the Sustainable Cities Collective by David Thorpe which sets out 21 Features of the Future Sustainable City. These range across finance and auditing, transport, smart citiesw, buildings, energy, and food. While the list contains some items we would include in a Learning Cities for the Future list, eg "Joined up action", the list reflects the physical planning interests of the author so I wonder what a Learning City list would look like.