Recto: The Houses of the Barbarians (Vitruvius, Book 2, Chapter 1, nos. 3, 4); Verso: The Areopagus in Athens with Cave Houses (Vitruvius, Book 2, Chapter 1, no. 5)., 1530–45
Drawing. Date: 1530–45. Dimensions: sheet: 7 1/2 x 5 9/16 in. (19.1 x 14.1 cm). Medium: pen and dark brown ink. Collection: Metropolitan Museum of Art.
