3. Follow Frontensingel past the Sphinx car park. Turn left at the traffic lights onto Maagdendries. A passage 100 metres ahead on the right leads you to Lindenkruis residential area. Although urban planner Frits Palmboom was able to develop the infrastructure, or ‘hardware’, of the Belvédère Plan, the 2008 economic recession hindered progress on the ‘software’. Today, however, housing development is in full swing. De Sphinx factory wall along Maagdendries repurposes industrial heritage for two collective private ownership (CPO) projects: Les Mouleurs (Martens Willems & Humblé, 2014–21) and the Sphinxtuin (Mathieu Bruls, 2015–19). CPO is a streamlined approach to construction where residents, architects, contractors, and consultants collaborate on future housing, putting residents’ desires at the forefront. Lindenkruis, built between 2015 and 2020, features urban villas and homes in a modest, sustainable style designed by several architects, including iNeX, N-Architecten, DEDRIE, and Verheij. Courtyards and small squares emerge, reminding us of how Maastricht had to infill due to the city walls’ strict confines. Lindenkruis’s palimpsest of developments lie atop one another like layers of earth, with materials such as zinc, ceramic, and hardwood honouring the area’s history. The courtyards and squares harmonise the new urban fabric with the old.