 The city itself was circled with a ring of bastions connected by curtains.The island of Getsemani was also fortified.Protecting the city on the landward side, atop San Lazaro hill, was the Castillo San Felipe de Barajas named in honor of Spain's King Philip IV and Governor Pedro Zapata de Mendoza, Marquis of Barajas' father, the Count of Barajas.