The interview with Yves Cabannes that we publish here focuses on a concept that is already one hundred and twenty years old, but that is of renewed current interest as a result of both the pandemic and climate change: the concept of the ‘garden city’. As an urban planning specialist, he has contributed to the reactivation of this concept, in particular through a manifesto in favour of 21st century garden cities, which he published in 2014 with Philip Ross.