Following the exploration and conquest of the Ilocos by the Castillan sword, the evangelization of the inhabitants was pursued in the characteristics zeal and devotion of the Augustinian missionaries. In time, the picturesque churches made of stones and mortar began to be built, undoubtedly thru free labor required of our forefathers, and these edifices of worship stood thru the centuries, mute but eloquent symbols of Spanish power that held sway in union with the Church. It is thus interesting to read the marker found near the door of the Vigan Cathedral, one of the most beautiful and imposing churches in the North, which was placed there by the Philippine Historical Committee.