The Bosque de Tlalpan, also called the Parque Nacional Bosque de Pedregal, is fully surrounded by urban area, just south of the Anillo Periférico and between the highways heading to Cuernavaca and to Picacho-Ajusco. The Bosque de Tlalpan is filled with pines, oyamel fir, cedars, oaks and eucalyptus trees, which grow on a solidified lava bed. Wildlife includes eagles, falcons, squirrels and the Mexican mouse opossum. It has been open to the public since 1968. It has parking, restaurants and food stalls in cabins, playgrounds its own Casa de Cultura or cultural center. One of the attractions in the park is the Tenantono Pyramid, which is located in a remote area of the park. Better known is the old Casa de la Bombas. This is an early 20th-century structure originally built in Colonia Condesa, Tlalpan to house a pump used to extract water from the ground. It ceased being a pump station in 1940 and laid vacant until 1975, when it was disassembled and moved to the Bosque. However, it was not reassembled until 1986 as part of a larger structure which now serves as a “Casa de Cultura” or cultural center. The façade of the center is made of volcanic stone called “chiluca” in French style, which was popular when it was originally built. The additions combine modern and Neoclassical elements but the interior is completely modern. The main areas are the gallery and the forum which host exhibitions and other events. There are also a number of workshops for dance, drama, music, literature and other arts. It is also the home of the Orquesta Juvenil de Tlalpan (Youth Orchestra of Tlalpan) . Fuentes Brotates de Tlalpan is a national park with an area of about one km2 running alongside a small canyon. It has a small lake and its own Casa de Cultura (cultural center). It has problems with trash and its ecosystem is heavily damaged, although there a number of large Moctezuma cypress trees. The Parque Ecológico Loreto y Peña Pobre is located on what were the lands of a former paper factory and extends over 21,000m2. This factory, called Loreto y Peña Pobre, was built in the late 19th century (a time called the Porfiriato in Mexico) when many factories and other infrastructure was built in this area.