Saint-Martin/Sint-Martinus Church was built by functionalist architect Jean Gilson between 1969 and 1971. Co-founder of the Groupe Alpha architectural practice, Gilson was involved in a number of office complex projects in Brussels in the 1950s and 1960s, including the Cité Administrative de l’État/Rijksadministratief Centrum and the Berlaymont building. He also made a name for himself in church-building. Saint-Martin/Sint-Martinus is a powerful modern structure, with its imposing trapezoidal façade adorned with a ceramic work by Zygmunt Dobrzycki on the theme of Charity, St Martin’s principal virtue. As an embodiment of such charity, worshippers entering the church have to pass through a very low entrance, which looks as if it is being crushed by the tower above. They then move through the ‘forest of charity’ under the narthex, which is also very low and features 12 ‘raw’ concrete (béton brut) columns carved in bas-relief. The floor is opus incertum, adding dynamism to the space. The plan of the nave mirrors the shadow of the tower, and so is also trapezoidal. A huge non-figurative bas-relief by Frédéric Geilfuss dominates the apse wall, while a set of stained-glass windows illuminates the space, whose open design encourages interaction between all worshippers.