The old historic belfry of the church known as the Bantay Tower, which served as a watchtower for pirates back in the Spanish colonial era, gave the town its name - bantay (meaning to guard). Established in 1590, the church is one of the oldest in the Ilocos Region.

The Saint Augustine Parish Church, commonly known as Bantay Church, is a Roman Catholic church in Bantay, Ilocos Sur in the Philippines. The church was dedicated to St. Augustine of Hippo. It is also known as the Shrine of Our Lady of Charity (Shrine of Nuestra Señora de la Caridad) housing the miraculous image of Virgin Mary as Our Lady of Charity, crowned by the Pope as the patroness of Ilocandia on 12 January 1956.