In Watermael-Boitsfort, the Pierre Blondel architectural firm built 59 social housing units, a nursery and a medical centre. After half a century, the frayed edge along the Logis-Floréal garden city has finally been completed with a clear urban planning intervention.

The Logis-Floréal garden city was built in several phases between 1920 and 1950, based on an initial design by architects Louis Van der Swaelmen and Jean-Jules Eggericx. Located just outside this neighbourhood, the Square des Archiducs, with its vast expanse and lack of structure, is the antithesis of the garden city. This large green space was originally designed to be the green heart of an imposing series of large buildings, but in the end, only two of the four planned segments were built. The two remaining segments, which remained open, have become a small informal grove and an urban agriculture space.