St. Hyacinth Church (San Jacinto Church) or the Ermita de Piedra de San Jacinto (Stone Chapel of San Jacinto) is an elevated historic chapel established in 1604, 100 years older than the Sts. Peter and Paul Cathedral. American soldiers during the Philippine-American War used it as headquarters in 1899. St Hyacinth is the patron saint of the city whose feast is celebrated every August 15 coinciding with the Pav-vurulun Festival. The oldest brick structure in the city is the first parochial building built by the Dominican fathers in Tuguegarao. The current structure is the latest in a process of rebuilding beginning in 1724, in 1892 after it was destroyed by an earthquake and reconstruction after World War II. The chapel was not heavily damaged during the war and as a result retains its original wooden retablo which dates back to the 18th century. (credit for the info: Tuguegarao Tourist Board).