Fundación de Villanueva de Miraballes en 1375 Historical milestone · Ugao-Miraballes, Arratia-Nerbioi, Bizkaia On 4 March 1375 the infante Juan, Lord of Vizcaya, ordered the settling and walling of the town at the site of Ugao, under the name Villanueva de Miraballes. The current hybrid name, combining the Basque term 'Ugao' with the Spanish 'Miraballes', was officially adopted in 1986. 4 de marzo de 1375 Photo: Txo (CC BY-SA 4.0) What to see and do in Ugao-Miraballes