Casa natal de Santiago Ramón y Cajal Curiosity · Petilla de Aragón, Sangüesa, Navarra Santiago Ramón y Cajal, histologist and winner of the 1906 Nobel Prize in Medicine, was born in Petilla de Aragón; his birthplace has been a museum since 1994. In March 2023 he was named favorite son of the municipality, which is twinned with Corteno Golgi (Italy) and Luarca (Asturias, birthplace of Severo Ochoa) within the European Network of Nobel Villages. 1994 Photo: JLPiedrafita (CC BY-SA 4.0) What to see and do in Petilla de Aragón