Firminy Vert, Architectural complex in Firminy, France

Firminy Vert is a group of buildings designed by Le Corbusier in Firminy, comprising the Saint-Pierre Church, a stadium, the Maison de la Culture et de la Jeunesse, and one Unité d'Habitation. The church, with its white concrete shell roof sweeping to a peak above a deep rectangular opening, stands at the top of stepped seating above a green field. A long flat canopy on slender pale columns extends in front.

Elected mayor of Firminy in 1953, Eugène Claudius-Petit had the town audited and found most centre buildings predated 1914 and amenities such as piped drinking water were practically absent. Charles Delfante, with architects Marcel Roux, Jean Kling and André Sive, drew the first Firminy-Vert plan in 1954. Claudius-Petit, who had met Le Corbusier in the United States in 1946, invited him in 1954 to design the second phase; Le Corbusier produced a civic-centre plan in 1958 and a 3,500-dwelling scheme around 1962. He died at Cap-Martin in 1965 before the works were finished.

The Maison de la culture et de la jeunesse, the complex's cultural center, was one of the 17 Le Corbusier works inscribed on the UNESCO World Heritage list in 2016. It opened in 1965 and holds a library, a cinema, an exhibition hall, a rehearsal hall and a theatre. Its roof is a curved concrete shell, and the building stands beside the stadium's stepped seating.

The five buildings are spread across Firminy-Vert, so plan to move between them on foot; the stadium's stepped seating rises above a green field, and the church's level 5 was left unfinished in 1978 before work resumed in 2003. Guided visits cover the Maison de la Culture, the Unité d'Habitation and the church, while the stadium and the 1965–1968 pool by André Wogenscky are seen from outside.

The stadium, built in 1966, is part of the Le Corbusier site listed as a historical monument, and its concrete terraces rise above a green field. The whole ensemble was proposed for UNESCO World Heritage listing in 2008, and the Maison de la Culture was inscribed in 2016.