Ageing well in the city

Geneva, 2040: 1 in 4 inhabitants is over 65. This is the scenario that will emerge in 20 years' time for the city of Calvin, as for major urban centers. According to SFSO forecasts, the senior population is set to increase the most in Swiss cities over the next few years. How can we take this new demographic situation into account? What impact will it have on public space planning?