Order of Alhambra the last Moorish stronghold in Spain conquered by the forces of Ferdinand II of Aragon and Isabella I of Castile in 1492. It was after the completion of the Reconquista that the Spanish monarchs decided to fund Christopher Columbus' initial voyage to the Americas. Spanish, and arguably European, culture changed significantly with this change of leadership, especially since the Catholic religion became the dominant religion in the Iberian Peninsula. The significance of the conquest of the Alhambra in the spread and free practice of the Catholic faith, in Iberia and the Americas, greatly inspired the founder, much as Columbus himself
Moorish Gibraltar the western and southern flanks, with towers and connecting passages added to strengthen them. The existing fortifications were also strengthened and repaired. The weak points that the Castilians had exploited were improved. The refortified city – the final incarnation of Moorish Gibraltar – stood in the north-eastern part of the present-day city, reaching from the area of Grand Casemates Square up to Upper Castle Road. It was divided into three main quarters. At the top was the Tower of Homage (just part of the Moorish Castle but usually referred to as such), a formidable square keep situated within a kasbah.