The medieval period left us some tower-houses, among which we can mention, due to its state of conservation and antiquity, that of Otxandategi, most probably built during the first half of the 13th century. On the upper part of its main door, we can see a coat of arms carved in stone, which symbolises the marriage between the heir of the manor and the fifth lord of Butrón, which took place around 1370. About a decade ago, the inhabitants of Berango adopted it as their distinctive blazon.

The first written texts about our parochial church go back to 1416, even though, according to Iturriza, it was built in the 12th century by tax-paying parishioners. As far as the Santa Ana hermitage is concerned, some of the documents found tell us that in 1627 it was already on the way.

According to certain texts, our farmhouses date back to the mid-fifteenth century the same as our local surnames, as the latter were created on the basis of the names given to the former, even though their typology sets them at the end of that same century.

Among the eight flour mills that were once in Berango, the oldest one is that of Poza, according to different documents. This mill used to be called “las aseñas de Poza de Merana” and was inherited by Doña Mencía in the first half of the 14th century. She donated it to her father, who had already had it as a gift from his wife, the daughter of Iñigo Ortiz de Ibargoen, dead in the battle of Altamira in 1275.