Castilla was an Aragon-class unprotected cruiser of the Spanish Navy that fought in the Battle of Manila Bay during the Spanish–American War. She was built at Cadiz, Spain. Her construction as an armored corvette with a central battery ironclad design began in 1869. In 1870, her design was changed to that of an unprotected cruiser or wooden corvette, and, after political events delayed her construction. During the first two years of the Philippine Revolution in 1896–1897, Castilla patrolled to intercept contraband destined for the Philippine insurgents and supported Spanish Army forces fighting ashore in Cavite Province on Luzon. When the Spanish–American War broke out in April 1898, Castilla was part of the squadron of Rear Admiral Patricio Montojo y Pasarón in Manila Bay and was subsequ