San Agustin Parish Church (Bay, Laguna) San Agustin Parish Church (Bay, Laguna) St. Augustine Parish Church (Filipino: "Simbahan at Parokya ni San Agustin") is the only Augustinian Roman Catholic church in Bay, Laguna, in the Philippines. The church was first administered by Augustinians friars and later transferred to the Franciscans. The current parish priest is Reverend Father John F. Tabot. It is historically considered as the oldest Roman Catholic church in the Province of Laguna upon the early conquest and establishment of La Laguna. The first church of Bay was constructed made of light material of bamboo and nipa by the first ever catholic missionaries in
Laguna de Bay la Lengua Tagala", 1613. Pila, Laguna). Currently, the lake is often incorrectly called "Laguna Bay," including in government websites. The middle part of Laguna de Bay between Mount Sembrano and Talim Island, is the Laguna Caldera believed to have been formed by two major volcanic eruptions, around 1 million and 27,000–29,000 years ago. Remnants of its volcanic history are shown by the presence of series of maars around the area of Tadlac Lake and Mayondon hill in Los Baños, Laguna, another maar at the southern end of Talim Island, and a solfataric field in Jala Jala. Laguna de Bay is