Paoay Church, officially known as San Agustin Church, is a historic Roman Catholic church located in Paoay, Ilocos Norte, Philippines. Built in the late 17th century, it is renowned for its unique architecture, which combines Gothic, Baroque, and Oriental styles. The church is made of coral stone and bricks, giving it a distinct appearance and durability. The church is a UNESCO World Heritage Site, recognized for its cultural significance and historical value. Its massive buttresses and intricate facade make it a popular tourist destination. Paoay Church also plays an important role in the local community, serving as a center for religious activities and celebrations.