The Church of San Francesco in Metanopoli is one of the finest pieces of sacred modernist architecture in the Milan hinterland. Designed by Mario Bacciocchi in the 1950s as part of ENI's comprehensive plan to provide Metanopoli with all the amenities of a complete town — including a place of worship — the church deploys a bold concrete vocabulary softened by careful proportions and the quality of light admitted through its windows. Bacciocchi was one of the leading architects of religious modernism in Italy, and this commission gave him the patronage and budget to realise a genuinely ambitious building. The interior is calm and well-preserved, making it worth a visit for anyone with an interest in how Italian modernism grappled with spiritual space.