Palatium Valerianu[m], from a series of prints depicting (reconstructed) Buildings from Roman Antiquity, formerly attributed…
https://www.rawpixel.com/image/9613881/image-architect-sketches-roman-temple-architecture-large-vintage-landscape-paintings-and-sculptureFree Image from public domain license
Design for an Octagonal Table and Top (Recto); Design for altar or tomb monument (Verso)