License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Manuel Alegre. View of the Patio of the Evangelists in the centre of the main cloister of the monastery of El Escorial, from "Views of El Escorial", ca. 1790–1800. The Metropolitan Museum of Art.