Chapter 7: Saint-Quentin-en-Yvelines: Lessons Learned from the Years 1965–2019

In the space of 50 years, Saint-Quentin-en-Yvelines (SQY) has seen a variety of urban development contexts. In the 1970s, the initial master plan revolved around a hierarchical organisation of hubs, and the priority went to the economic question. It also created a specific public road system, along with housing districts endowed with a wide range of amenities to provide a new ‘way of life’. Fifty years later, a number of points typical of SQY’s specific urban nature can be identified. This chapter mentions three of them: an urban ‘dividing line’, the organisation of urbanisation into small towns (urban units) and the aesthetic and environmental qualities of the town. These urban planning qualities have been addressed by the recent Comprehensive Local Development Plan (2016–2018). However, other points such as public transport, driving conditions, nightlife and quality of the green spaces are the topics discussed by experts and citizens in the local conversation.