By 2050, the world's population will grow from almost 7 billion now to over 9 billion. Whereas some cities such as Nantes, Lyon and New York have taken on the challenge of enhancing their respective urban environments with a quality network of public spaces that bring people together; others have not. Which path will their Belgium colleagues choose to walk? Architects such as Hans Verstuyft , Christian Kieckens, Vincent Callebaut and many others reflect on the current challenges faced with today. With an introduction by the Belgium art critic, Pierre Loze.