In the interior (fourth chapel on left aisle), look for Jacopo della Quercia's marble altar (1422).
The marble altar carved by Jacopo dlla Quercia was destroyed and can no longer be seen.
mnli hypothesis: The marble altar carved by Jacopo dlla Quercia was destroyed and can no longer be seen. premise: In the interior (fourth chapel on left aisle), look for Jacopo della Quercia's marble altar (1422).