Notre Dame de Mantes
Mantes-la-Jolie, France · built 1155
The medieval Collegiate Church of Our Lady of Mantes, (Collégiale Notre-Dame de Mantes-la-Jolie), is a large and historically important Catholic church constructed between c.1155 and 1350 in the small town of Mantes-la-Jolie, about 50 km (30 mi) west of Paris. Although not a cathedral, it was built on a cathedral-like scale. Its grandeur, its quirky design and its strong associations with the Capetian dynasty make the church particularly interesting to architectural historians.
Church data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).