Texas Subcategories This category has the following 6 subcategories, out of 6 total. C Cable-stayed bridges in the Philippines (4 P) Communication towers in the Philippines (1 C)L Lighthouses in the Philippines (23 P)O Observation towers in the Philippines (5 P)S Skyscrapers in the Philippines (5 C, 1 P, 1 F)W Water towers in the Philippines (1 P)