 The latter two were connected by a large túmido arc (in pointed horseshoe), and covered by a formidable Gothic-Mudéjar coffered ceiling.On 20 January 1486, here was held the first interview between the queen Isabella I of Castile with Christopher Columbus to finance the trip to the Indies.In 1524 Archbishop Alonso de Fonseca y Ulloa (1523-1534) commissioned to the architect Alonso de Covarrubias the construction of the west wing, with its courtyards and its magnificent staircase.