These churches have been selected taking into consideration the style of the building and design that was adapted to the physical condition in our country.
According to UNESCO WHS, "the four churches are outstanding examples of the Philippine interpretation of the Baroque style, and represent the fusion of European church design and construction with local materials and decorative motifs to form a new church-building tradition."
Their common attributes are their massive appearance which shows a fortress/protective-like character in response to invading forces/pirates or protection from earthquakes.
Since these churches are in-scripted, they are covered and protected through Republic Act 10066 (National Heritage Law) and Republic Act 10086 (National Historical Commission of the Philippines Law). Through these legislations, these churches are secured of funding for its conservation, protection and regular maintenance.
Church of Nuestra Señora de la Asuncion
Santa Maria, Ilocos Sur
Sitting atop a hill surrounded by a defensive wall, this massive church is unlike many other Philippine churches that's always located near the town plaza. Some of its unique features also include the convento that lies parallel to its facade and its bell tower that stand a few meters away from the church building. The walls are without ornaments or designs but the buttresses are massive enough designed to withstand an earthquake. The interiors are endowed with a pulpit, lectern, and huge altar. It also boasts of a simple fresco on its ceiling near the altar.