San Diego de Alcalá Parish Church, commonly known as Polo Church, is one of the oldest historical landmarks in Valenzuela City, located about 15.5 kilometers north of Manila. It is under the jurisdiction of the Diocese of Malolos. The original church was completed in 1632, following the establishment of Polo as an independent settlement in 1623. Historical records note that local residents were required to render labor during its construction under the Spanish colonial system.

Located at the town proper, St. Andrew the Apostle Parish Church serves as the main Roman Catholic church of Norzagaray, Bulacan. The parish traces its establishment to 1787, placing it among the older churches founded during the Spanish colonial period in Bulacan. The church is dedicated to Saint Andrew the Apostle, who is also the patron saint of Norzagaray. Each year, the parish and town celebrate his feast on November 30, a date that coincides with the local town fiesta. 

As the oldest church in Bataan and a cradle of early Philippine Christianity, Saint Dominic de Guzman Parish Church, more commonly known as Abucay Church, holds a place of exceptional historical importance in the country’s religious and cultural story. Established as a parish in 1587 and entrusted to the Dominican friars a year later, the church is not only one of the earliest centers of Catholic worship in the region; it is also directly linked to the beginnings of Christian education through print. It was here that the Dominicans established a pioneering press where the Doctrina Christiana, the earliest printed book in the Philippines, was produced, firmly anchoring Abucay Church to the spread of Christianity through both preaching and the written word.

Our Lady of the Pillar Church in Morong, Bataan is over 400 years old and stands as one of the oldest churches in the entire province. Founded in 1607, it has long been an important part of the town’s history, serving as one of the earliest centers of Christian worship in the area.