Notre-Dame-du-Travail, Paris

Notre-Dame-du-Travail sits quietly in the Plaisance neighborhood, appearing from the street like a traditional stone-faced church. Once you step inside, you encounter an industrial revelation. The interior reveals a massive, exposed framework of one hundred and thirty-five tons of iron and steel that resembles a nineteenth-century factory or railway terminal. Architect Jules-Godefroy Astruc deliberately designed the space this way to honor the local parishioners who lived and worked in the district, many of whom spent their days constructing the metal pavilions for Paris World Fairs. He wanted the working-class community to feel at home in a sanctuary built from the very materials they spent their lives handling.