A fortress church in southern Iloilo is part of the 4 Baroque Spanish-era churches of the Philippines inscribed by UNESCO in 1993 as a World Heritage Site. In Miag-ao, set on the highest point of the town to guard and watch out from the Tacas or the Moro invaders, the beautiful church dedicated to Sto. Tomas de Villanueva was built.
It is said that this church is of Baroque-Romanesque style. It is Baroque because elements like colonnades and domes, the chiaroscuro as well as the bold play of volume and void is present in this church. This style was common in Europe during the 1600s. Romanesque on the other hand is characterized by bold semi-circular arches, typical during medieval times.