Church of San Mamés Monument · Arevalillo de Cega, Comunidad de Villa y Tierra de Pedraza, Segovia It preserves the original Romanesque apse while the rest of the building was rebuilt in the eighteenth century. San Mamés is the village's patron and his feast is held on the last weekend of August. Photo: Malopez 21 (CC BY-SA 4.0) What to see and do in Arevalillo de Cega