100 females there are 102.5 males, and for every 100 females age 18 and over, there are 100.5 males. The Municipality of Loreto (which includes Nopoló, Puerto Escondido, San Javier and the rest of the little villages from the coast and mountains) has a population of 21,071 people. Due to Loreto's small population and low immigration, large families are characteristic, and residents often have the same last name, a phenomenon also found in other state localities. The two largest families are the "Davis", predominating in the east of the city, along the beach ("Calle Davis" is a street with this last name), and the "Murillo", predominating in the south along the Arroyo Loreto, in the neighborhood known as "barrio del Muro", named after the retaining wall built to hold flood waters from the creek. Other large families are the Amador, the Arce, the Cota, the Higuera, the Romero and the Villalejo. Culture There are seven buildings in Loreto from the 18th to 20th century that are considered historical monuments by the federal government; the most important is the Mission of our Lady of Loreto at the start of El Camino Real ("The Royal Road"), an historic corridor that follows north along the ancient route of the Spanish missions, to its ending in Sonoma, California, USA. In the neighboring town of San Javier are five historical buildings, most importantly the Mission of Saint Francis Xavier (Misión de San Francisco Javier), the best preserved mission in the peninsula. The ruins of Mission of San Bruno, the first mission of Baja California, founded in 1683 by Jesuit missionary explorer Padre Eusebio Kino. It was ordered abandoned by the Spanish Crown two years later. It is located 20 kilometers north of Loreto. The Jesuit Missions Museum (Museo de las Misiones Jesuíticas) is located beside the Mission of our Lady of Loreto. It has a collection of religious art, weapons and tools from the 17th and 18th centuries that were used in the Spanish missions in Baja California. In the "La Giganta" mountains ("Sierra de la Giganta"), there are cave paintings in canyons and rock shelters. The nearest sites to Loreto are "Cuevas Pintas" (15 km to the west) and "La Pingüica" (60 km to the north). Some of the cave paintings from the indigenous groups of Baja California have been added to UNESCO's list of world heritage sites. Tourism Events Fiestas de la Virgen