The proprietors of the ancient tower of Zaldibar, dominated secularmente in the locality. According to the tradition, gift Sancho Abarca spent ten years caught in the cell of the tower of this lineage. From here there come Juan and Vicente de Zaldibar, masters from Field at the end of the XVth century and founders of the school of company of Zacatecas

In Zaldua five chapels were nailed; St Kitts in Ulanzu, the St Lawrence in Urízar, St Martin in Zaldibar, Santa Marina in the summit of the mount Ganguren and Santiago in Gazaga, founded this one for the proprietors of the solar house of Gazagagoitia. Also:

Church of San Andrés
Chapel Neorrománica
Chapel of the Hospital
Monasteries Carmelite Mothers
Tower of Garitaondia
Tower of Zaldua
Tower of Eitzaga

They stand out like declared areas of archaeological presumption of Biscay for the Basque Government: Chapel of Santa Marina, Hamlet Gatika, Tower Zaldibar, Chapel of St Martin, Church of San Andrés Apóstol, Tower Zaldua, Tower of Eitzaga, Hamlet Eitzaga Barrenengua, Foundry Olaetxea, Foundry Olarreaga

It is necessary to indicate for his importance, the mining - medicinal spring called of Zaldibar, along with which Spa establishment and a hostelry was constructed in the XIXth century one . The Spa of Zaldibar was founded by don José Maria de Munabe and Aranguren, XI Count of Peñaflorida, in the year 1846, receiving the called spring of “urgazia ” (salt water), waters that were used from time immemorial, for his notarial therapeutic efficacy in many and varied cases. (fte to see links)