The Bamboo Organ stands in Saint Joseph's Church in Las Piñas, and there is nothing else quite like it anywhere in the world. Father Diego Cera built the instrument between 1818 and 1824, facing a shortage of metal for organ pipes by substituting bamboo — a material locally abundant but previously untested for this purpose. Of the organ's 1,031 pipes, 832 are made from bamboo, with the remainder in metal for the higher registers.
The church housing the organ, built in the Baroque style between the 1790s and 1820s, is itself a National Cultural Treasure of the Philippines, constructed from adobe stone. The organ occupies the choir loft at the rear of the nave. It is in regular use for Sunday mass and can be heard during services; the annual Bamboo Organ International Music Festival, held in February, attracts professional organists from Europe, Asia, and the Americas who perform both classical and contemporary repertoire. Visits outside festival season are quiet and the organ can be seen close up.