License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Stefano della Bella. Plate 6: Two seated pilgrims and one laying down to left, a tower in ruins to right in the background, from "Caprice faict par de la Bella", ca. 1642. The Metropolitan Museum of Art.