Across the Philippines, and especially in southeastern Cebu, there are watchtowers built during the Spanish colonial era in an effort to avert Muslim slave raiding that was rampant especially in the middle of the 18th to the middle of the 19th centuries. These served as lookouts that alerted the populace whenever there’s a sighting of the much feared prahu, sea going vessels that were fast and used by these raiders.
In Guinsiliban, a southeastern town of Camiguin (de Mindanao), it has a watchtower that is unique: instead of the traditional circular and octagonal, like in Guimbal, Iloilo or square, it’s an equilateral triangule, the first time that I’ve seen one.
Like typical structures, it is made of limestone and coral stones piled on top of each other. There’s an arched entrance although I’m not sure if the original is arched as this entrance seems to have been fixed as evidenced by cement and cut limestones. There’s a stone staircase at the intersection of two walls that point to the sea. The walls are crenelated.
I don’t know when this structure was built but probably the builder was an Augustinian Recollect as Camiguin was evangelized by the order. At the top of the beautiful semicircular stone stairs, one can see sweeping views of the sea in the direction of Balingoan. On a clear day, Mt. Balatucan and Sipaca Hill can be seen.
Fr. Rene Javellana, SJ, in his book, Fortress of Empire, lists two watchtowers in the town with the other one as made of wood and no longer existing.