Large illustration of a part of the second order of the interior of the Pantheon, which now no longer exist, from "Raccolta de'Tempi Antichi, Prima Parte" (Collection of Antique Temples, First Part)
Francesco Piranesi Italian
Publisher Francesco Piranesi Italian
Not on view
The term "secondo ordine" does not refer to the classical architectural orders (Ionic), but most likely to the ordinance of the pillars within the interior of the Pantheon.