Mountainside with Fallen Tree by Friedrich-Wilhelm Gmelin https://www.rawpixel.com/image/9043790/mountainside-with-fallen-tree-friedrich-wilhelm-gmelinFree Image from public domain licenseThe Principal View of the Large and Small Cascades at Tivoli by Friedrich-Wilhelm Gmelin https://www.rawpixel.com/image/9014077/image-paper-plant-personFree Image from public domain licenseTwo Roman Warriors with She-Wolf, Romulus, and Remus by Polidoro da Caravaggio https://www.rawpixel.com/image/8969972/two-roman-warriors-with-she-wolf-romulus-and-remus-polidoro-caravaggioFree Image from public domain license