Church of San Pedro Apóstol de Castrotierra Monument · Castrotierra de Valmadrigal, Sahagún, León The parish church of a village of a little over a hundred residents set at 850 metres, on the edge of the plain that drains towards the river Cea through a network of seasonal streams. Photo: Rodelar (CC BY-SA 4.0) What to see and do in Castrotierra de Valmadrigal