A Renaissance historian walks into a medical library, but not all who wander are lost. At New York’s Stony Brook University, a modern printing of Leonardo da Vinci’s anatomical drawings sits on a shelf made significant only by its blatantly apparent lack of use. Perhaps the book belongs in a humanities library, lest a wandering medical student take its contents as truth. The Leonardo da Vinci. Anatomies: Machines, Human Body, Nature exhibition at Montepulciano Fortress (open until October 7) invites us to revisit these drawings with attention to how Da Vinci conceptualized the body as a highly sophisticated mechanical device, a device that is governed by the universal mechanical laws of nature. To highlight this theme, the Renaissance genius’ anatomical sketches are placed in careful, dynamic conversation with his mechanical and geological studies.