Casa Mudéjar de Areatza Monument · Areatza, Arratia-Nerbioi, Bizkaia Image of Areatza, not of the place itself. Building from around 1525, the only surviving example of Mudejar architecture in Bizkaia, within the historic ensemble of Areatza. hacia 1525 Photo: Tim Tregenza (CC BY-SA 3.0) What to see and do in Areatza