The Grand Canal above the Rialto (recto); A Priest Celebrating Mass and Saint Vincent Ferrer Preaching (verso)

Francesco Guardi · 1712–93 · Pen and brown ink, brush and brown wash, over black chalk (recto); red chalk, pen and brown ink, brush and brown wash (verso)

From the collection of The Metropolitan Museum of Art. Free to download, adapt and use — no permission needed.