The Tower of Mendoza is strategically located between the roads of Old Castile and the Ebro river. The Mendoza's entered to the service of the kingdom of Castile during the reign of Alfonso XI (1312-1350). Álava is one of the Basque territories incorporated into the Castilian monarchy with jurisdictions. Before the Mendoza's went to Castile, Álava was a battlefield, in which the lordly families resolved their fights over generations. In 1332, the Mendoza's had already battled several times with the Guevara. Once this castle entered into the service of the kings of Castilla, those contests were ended.
Iñigo Lopez de Mendoza built the Tower of Mendoza in the early 13th century. He participated in the Battle of Las Navas de Tolosa in 1212 and for having contributed to the breaking of the siege of the chains that guarded the store of Almohade, Muhammad al-Nasir (Miramamolin) (1199-1213), added to his coat of arms a border with chains.
The Dukes of the Infantado maintained possession of the Tower of Mendoza until its 1856 sale to the Victorian Bruno Martinez of Aragon and Fernandez de Gamboa.
For 50 years, it was assigned to the Diputación Foral de Álava and hosted the Museum of Heraldry of Álava, with a collection of medieval shields and clothing and information on Alava's heraldry. In 2012 it was returned to its owners because it does not meet the accessibility requirements for a museum.
The tower stands out of the whole castle. The wall surrounds the building with four round towers in the corners. It has five floors: the ground floor and the first floor are made of wood and in the three remaining ones there are openings for defence. The top floor is finished with a cover or roof to avoid water entering the castle.
The castle now has a room where there are the shields of the most important families of Álava.
References:House of the Blackheads (Melngalvju nams) is a building situated in the old town of Riga. The original building was erected during the first third of the 14th century for the Brotherhood of Blackheads, a guild for unmarried German merchants in Riga. Major works were done in the years 1580 and 1886, adding most of the ornaments.
The structure was bombed to a ruin by the Germans June 28, 1941 and the remains demolished by the Soviets in 1948. The current reconstruction was erected from 1995 to 1999. Today the House of Blackheads serves as a museum and sometimes concert hall.