City of Vigan: Official city government site for the capital of Ilocos Sur. Includes profile, history and heritage, governmental information, events announcements, and other news and information.Our Ancestral Home: The place of Vigan in Philippine political history. Also photos of the churches of Vigan, and essay on the history of Catholicism in Ilocos Sur.Vigan: The oldest surviving Spanish colonial city in the Philippines. Located in Ilocos Sur.