This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
La Tour d'Odre en BoulognesurMer.. fr La figure de Boulongne ensemble des fortz et places circonvoysines par Pierre Haultin Collection d'Anville La figure de Boulongne ensemble des fortz et places circonvoysines par Pierre Haultin Gallica BNF Pierre Haultin PDold Uploaded with Tour d'Ordre Lighthouse maps