Saint Joseph's Church, also called Las Piñas Church or the Bamboo Organ Church, is a National Cultural Treasure of the Philippines and the reason most visitors come to Las Piñas. The building is constructed from volcanic adobe stone in the Earthquake Baroque style, with characteristically heavy walls, a massive facade, and a single baroque tower.
The church is still an active parish. The nave interior is plain but for the Bamboo Organ at the rear and several historical religious artworks. The parish compound adjacent to the church contains a small museum with items related to Father Diego Cera and the organ's history. The church is open throughout the day and entrance is free; the annual Bamboo Organ Festival in February is the best time to visit if you want to hear the instrument in performance, but the church itself rewards a visit at any time.