Gezicht op het kasteel en de vesting van Coucy (1655) by Matthäus Merian II, Matthäus Merian II and Anna Beeck https://www.rawpixel.com/image/13766612/image-paper-frame-personFree Image from public domain licenseGezicht op Château de Coucy, Frankrijk (c. 1870 - c. 1890) by Séraphin Médéric Mieusement and Adolphe Giraudon https://www.rawpixel.com/image/13752668/photo-image-paper-sky-public-domainFree Image from public domain license