The small chapel at the Haut Clair retreat centre in Uccle (1962) was designed by Jacques Boseret-Mali, one of the founders of Groupe Structures. Although the firm had very large commissions at the time (including the masterplan for the Noordwijk, the Modelwijk and the Berlaymont Institute in Waterloo), a thick file in its archive bears witness to great dedication – Boseret himself was, in fact, a deeply religious man. I have always found that tension between spirituality and speculation in the work of Groupe Structures fascinating. Now that, after years, I had finally set aside time to visit the chapel, I discovered via Google Street View that it had been demolished in 2020: in place of this architectural miniature stands a banal apartment block. This photo has been hanging in my office ever since, as a reminder of my own procrastination, and as an architectural representation of Lucebert’s famous verse ‘Everything of value is defenceless’.