The Fort Saint-Jean is located in the 1st arrondissement of Lyon and part of the first fort belt of Lyon, which includes Fort de Loyasse, and the now-demolished Fort Duchère and Fort de Caluire.
Wikipedia https://en.wikipedia.org/wiki/Fort_Saint-Jean_(Lyon)
Address 11 Rue de la Poudrière, Lyon 69001, France
Coordinates 45°46'14.349" N 4°48'54.876" E
