Nagcarlan, Laguna is a National Historical Landmark.
According to the National Historical Commission of the Philippines, "The Nagcarlan Underground Cemetery Historical Landmark is a fine example of Spanish colonial architecture. Built by the Franciscan Friar Vicente Velloc in 1845, its octagonal grounds are enclosed by a wall decorated with wrought-iron grills and stonework meant to look like drapery.
"An arched gate leads to the chapel built into the cemetery's inner wall. Wings radiate from the sides of the chapel, forming an arc where the aboveground niches are found.
"Under the chapel, two flights down, is the crypt. This underground section of the cemetery played an important role in our history. Throughout the Revolution of 1896 and the Filipino-American War, our fighting patriots used the crypt as a secret hideout, gathering here to plan their moves or to seek shelter. Similarly, it became a safehouse for guerillas during the World War II.
"The Nagcarlan Underground Cemetery Historical Landmark is located in Nagcarlan a mountainside town of Laguna. The landmark is open for public viewing from 8:30 a.m. to 4:30 p.m. from Tuesday to Saturday. For inquiries please contact the NHI central office at telephone number +63 2 5249952."