Palacio Zurbano, Historical palace in Arratzua-Ubarrundia, Spain.

Palacio Zurbano is a manor house in Arratzua-Ubarrundia featuring two square towers at its north corners and a two-story rectangular form. The building includes an upper attic level and four pitched roofs that give the structure its distinctive profile.

Pedro Ruiz de Erenchun, a bachiller, had the palace built around 1621, hiring Pedro de Eguinoa and Juan de Eguinoa of Elguea for the works. The property later passed to the Uriarte family. The stone arch of nine voussoirs at the entrance carries the arms of Isabel Ortiz de Zurbano, so it was added after the house was finished. On 1 July 2003 the Basque Government listed it as a monument.

The main entrance displays a stone arch with nine wedge-shaped stones topped by a large coat of arms honoring Isabel Ortiz de Zurbano. This heraldic display and ornate entryway reflect the importance and wealth of the family who lived here.

The palace stands opposite the church at the northern, highest end of Zurbano, its main facade facing north toward the church. The ground floor holds only expanded entrance-hall rooms; a three-flight stone staircase with balustrade rises to the first floor and splits at its last flight, one branch to the main body, the other to the western annexes. The attic level now serves as a hall.

The eastern annex, built in masonry, housed a school founded by the Zurbano family around 1920. The western annex has the typical volume of a hayloft; both additions are now converted into housing. The palace was declared a monument by the Basque Government on 1 July 2003.