Interior view of the Flavian Amphitheater, called the Colosseum, from Views of Rome by Giovanni Battista Piranesi https://www.rawpixel.com/image/8976323/image-paper-cartoon-personFree Image from public domain licenseAntique Ruins (recto); An Animated Landscape (verso) by Willem Schellinks https://www.rawpixel.com/image/14262761/antique-ruins-recto-animated-landscape-verso-willem-schellinksFree Image from public domain license