The bull of Gregorio VIII Historical milestone · Piedrabuena, Montes de Ciudad Real, Ciudad Real Image of Piedrabuena, not of the place itself. The first documentary mention of Piedrabuena appears in a bull of Pope Gregory VIII dated 1187. After the battle of Las Navas de Tolosa, in 1212, the town and its district were incorporated into the domains of the Order of Calatrava. 1187 Photo: 19Tarrestnom65 (CC BY-SA 4.0) What to see and do in Piedrabuena