This week we talk to Dr Ellie Cosgrave - an Associate Professor at UCL, Dr Lakshmi Priya Rajendran - a Senior Research Fellow looking at future cities, and Dr Rob Kitchin - a Professor focussing on the relationship between technology, society, and space about what is a smart city? What do we want the cities of the future to look like? And what's the best way of making sure the future of our metropolitan public spaces is bright, not dystopian?