This is a historical site and the oldest stone fort in Manila. Built in 1586, it was called the Nuestra Senora de Guia designed by Jesuit priest Antonio Sedeno. Fell into disrepair and was renovated in 1593. Incorporated as part of the walls but later abandoned due to its unstable foundations. The new structure was constructed with orillons (curved corners) masking cannons on the flanks. Destroyed during the British invasion in 1762. Repaired and renovated in 1764. American Army ordinance section was built on-site during the American occupation. Destroyed during World War 2 and is now a major tourist attraction of the Intramuros Walled City.