Morro Castle (Spanish: Castillo de los Tres Reyes Magos del Morro), named after the three biblical Magi, is a fortress guarding the entrance to Havana bay in Havana, Cuba. The design was drawn up by the Italian engineer Battista Antonelli; originally under the control of Spain, the fortress was captured by the British in 1762, and was returned to the Spanish under treaty terms a year later.