Only two years after the pioneering, arty visions of food production in cities featured in 2007 exhibition Edible cities at NAi-Maastricht, we can say that today urban agriculture is considered as an important feature in architecture design and urban planning. And that it's a fashionable topic too. ’In the past if you were proposing to put gardens on top of your buildings, you were considered as crazy. Now you're considered crazy if you don't’, said architect Andre Viljoen, one of the speakers at the Foodprint symposium, hosted by Stroom, Den Haag on June 26. Integrating food production with urban activities might sound strange, but in fact cities are always shaped after the type of food system feeding them. Author of the influential book Hungry City, Carolyn Steele explained that the first cities were born in the so-called 'fertile crescent' in order to manage the surplus of food production in the surrounding countryside. In pre-industrial cities the wealth of the city was linked directly to the wealth of its countryside: Ambrogio Lorenzetti's fresco ‘Allegoria del Buon Governo’ represents the 'good government' as a balance of city and countryside. In pre-industrial cities food production had to be located in proximity to urban settlements – as German economist Heinrich von Thuenen formalized in his 1826 model. But after the introduction of railroad transportation, and the introduction of industrial processes in agriculture, food production started to progressively disconnect from cities, which in turn could explode in size and population.