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:The Chapel of St. Martin is the only completely preserved Romanesque building in Vyšehrad and one of the oldest in Prague. In was built around 1100 in the eastern part of the fortified outer ward. Between 1100 and 1300, the Rotrunda was surrounded by a cemetery. The building survived the Hussite Wars and was used as the municipal prison of the Town of the Vyšehrad Hill.
During the Thirty Years’ War, it was used as gunpowder storage, from 1700 to 1750, it was renovated and reconsecrated. In 1784, the chapel was closed passed to the military management which kept using it as a warehouseand a cannon-amunition manufacturing facility. In 1841, it was meant to be demolished to give way to the construction of a new road through Vyšehrad. Eventually, only the original western entrance was walled up and replaced with a new one in the sountren side. The dilapidating Rotunda subsequently served as a shelter for the poor.