The Archiepiscopal Palace of Alcalá de Henares (Spanish: Palacio Arzobispal de Alcalá de Henares) is a palace located in Alcalá de Henares, in the Community of Madrid, Spain. It is now home to the Diocese of Alcalá de Henares. It is located in the Plaza del Palacio and this form part of the monumental set declared World Heritage Site by UNESCO. The building complex dates from 1209. Two thirds were destroyed in a devastating fire in 1939, during the Spanish Civil War. The part of the building which is preserved is what is left intact after the 1939 fire, the damaged parts were not restored. In this building came to reside different Castilian monarchs, were held synods and councils, and in here were born the youngest daughter of the Catholic Monarchs and future queen of England, Catherine of Aragon, and the German Emperor Ferdinand, son of Joanna "the Mad". In addition, it is famous for being the place where the first meeting between the Catholic Monarchs and Christopher Columbus was held. History First it was a Mudéjar fortress commissioned in 1209 by Archbishop Rodrigo Ximénez de Rada (1209-1247), as a temporary residence of the archbishops of Toledo (Alcalá belonged to the archdiocese) and hence its name. It has suffered several fires and destructions, and has been remodeled several times to the present. In the Archbishop's Palace were held the Courts in 1348 and was enacted the Ordinance of Alcalá, in that was unified the administration of justice to all the lands that formed the Crown of Castile. In 1308 the kings Ferdinand IV of Castile and James II of Aragon met here to agree and sign the Treaty of Alcalá de Henares by which were distributed the territories obtained to al-Andalusian Taifas during the Reconquista. Also in the 14th century, Archbishop Pedro Tenorio (1377-1399) rebuild the building fortifying it. He built a parade courtyard, rectangular, of more than 2 hectares. Surrounded by a walls with 21 towers; all rectangular less the albarrana of pentagonal, and the attached to it a semicircular plan. Currently are 16 towers, highlighting the "Tower of Tenorio" nominated in memory of the Archbishop. In the 15th century, Archbishop Juan Martínez Contreras (1423-1434) build the east wing, decorated with large Gothic windows, the Anteroom and Hall of the Councils. The latter two were connected by a large túmido arc (in pointed horseshoe), and covered by a formidable