The Church of Saint-Pierre in Firminy is one of the major works of the Firminy-Vert complex associated with Le Corbusier, completed after his death but rooted in his late architectural language. From outside it looks severe and sculptural; inside, light enters through carefully placed openings that turn the concrete volume into something more contemplative.
It is the strongest architectural excursion from Saint-Etienne for travellers interested in modernism. The church should be seen with the wider Firminy site if time allows, because the housing, cultural and religious buildings together explain the ambition of this postwar urban experiment.