The residence that the Mexican government provides for the Chief Executive and his family during his six years in office, is located on land that has a varied history of human settlement dating from even before what we consider the Pre-Hispanic period, though little is known about that time. Los Pinos, as the house is called, is located in Chapultepec Woods or Park (Chapultepec means "hill of the grasshopper"). According to oral tradition and some of the indigenous codices used by the Spaniards to reconstruct the history of the Valley of Mexico, this area has been permanently inhabited since the 12th Century AD. It was once densely wooded since it was located near the sweet water lakes and natural springs that irrigated the Valley.

The Mexica tribe arrived in the Valley of Mexico after a long pilgrimage from Aztlán, and settled in Chapultepec around 1250, when Azcapotzalco (then dominating the Valley) was ruled by tlatoani Acolnahuacatzin. The Mexicas settled behind Chapultepec, in a place later known as Techcatitlan, according to the Mexicáyotl Chronicle.

Chapultepec was the last stage of the Aztec pilgrimage before the tenochas took possession of the heart of the lakeland after "finding the eagle prophesied by Huitzilopochtli, perched on a nopal cactus, devouring a serpent". On that hillock, they laid the first stone of what would become their home: Tenochtitlan (1325).

The Annals of Cuautitlán tell that it was in the year 12-house (1465) that the "water road" was begun. At that time, Moctezuma Ihuicamina ruled Tenochtitlan, and the wise man of Texcoco, Nezahualcóyotl, was in charge of the construction. This tlatoani beautified the forest, planting ahuehuetes (or Moctezuma's Cypresses). He fenced it in, making the Hill of the Grasshopper a place of rest and recreation for the Lords of the Mexica. Some of them had their likenesses carved in the cliffs. It was believed that the waters had a purifying influence, freeing one from guilt and curing illness.

Moctezuma Xocoyotzin was especially fond of Chapultepec. It was the sacred place in which he chose to hide (in the cave of Techcatitlan) when he heard of the arrival of the "white gods". However, the fate of great Tenochtitlan had been cast (1521), and from its ruins and the Meso-American world arose New Spain.

During the colonial period, the oldest reference to this place that we have comes from a town meeting on December 15, 1525, which notes a mill "beside the Tacubaya River". The land on which the "Molino del Rey" (King's Mill), which was then known as the "Salvador" mill, was located, must have belonged to the crown and, possibly, to Hernán Cortés before it was granted to Alderman Ruy González in 1550.

During the first half of the 17th Century, the growth of Mexico City led to the construction of many mills. Several were in the Chapultepec and Tacubaya area, and all belonged to well-known families granted the waterways which provided the power for the mills and irrigation of the surrounding cultivated lands.

Don Juan de Alcocer y Rodríguez de Contreras (who died in 1649) owned the mills of Chapultepec. Toward the mid 17th Century, the mills and their lands were seized and put up for public auction. They were acquired by Field Master Don Antonio Urrutia de Vergara, one of the richest men of the period, who founded three estates, one of which included the mills of Chapultepec and the Tacubaya heights, as well as those in Santa Fe. By 1724, although there had been some trouble with wills and heirs, the lands were well cared for, the mills were functioning and crops were grown around the house in which the Urrutia de Vergara family frequently took short rests. In 1732, Ana Urrutia de Vergara married the Sixth Count of Santiago de Calimaya, of the opulent Altamirano de Velasco family. By this marriage, the hacienda, including real estate, mills and lands of Chapultepec, as well as the Molino del Rey, as it is called in the papers, passed to his family.

The mills and lands were successively rented out to various people, had several administrators, and passed on to other heirs. In 1784, Doña Ana María Guitiérrez Altamirano de Velasco y Ovando, Tenth Countess of Santiago de Calimaya, heiress to the Molino del Rey estate, married Don Ignacio Leonel Gómez de Cervantes y la Higuera, of the no less illustrious Cervantes family.

At the beginning of the 19th Century, the first stirrings of insurgency were felt in New Spain, leading inevitably to the independence of Mexico. This property, then held by the Cervantes family, underwent several transformations.

After Cortes de Cádiz abolished mortmain in 1820, and this was confirmed in 1822 by Agustín de Iturbide as Emperor of Mexico, the estates were divided up. Molino del Rey was gradually sectioned and sold to various people. On one part of the land, the shell of the house that would become Los Pinos, residence of the President of Mexico, was built.

It appears from what we know of the battle of Molino del Rey, during the war between Mexico and the United States of America (1846-1847), that this conflict had serious repercussions on the hacienda. After 1851, the last descendants and owners of the estate decided to get rid of what were hotly disputed properties. The purchaser, a Mr. José María Rincón Gallardo, sold the property again in 1853, to Doctor Pablo Martínez del Río, granting him "possession and property of the Mill named the del Rey" near Chapultepec. Dr. Martínez del Río, a gynecologist, built a ranch there, where he spent short vacations from his activities as a businessman and doctor. He named it "La Hormiga" (The Ant), perhaps because it was the smallest of his many properties. Beautiful cedar-lined avenues were built; he planted many of the trees himself. Seven years after "La Hormiga was sold to Maximillian's government (Dr. Martínez del Río was ambassador of the Second Mexican Empire to Greece and Turkey), the property returned to the Martínez del Río family (1872). This was when Don Sebastían Lerdo de Tejada was interim President of Mexico after Benito Juárez' death. As the years went by, the once-rural property became a splendid residence.

When Dr. Martínez del Río died (1882), his seven children and their offspring fought over it in court until this century, when they reached an agreement with General Alvaro Obregón's government to cede the rights they held over the "La Hormiga" Ranch.

In the midst of the Revolution, in 1916, Carranza's troops occupied the estate. On May 2, 1917, the first Chief of the Constitutionalist Army, head of the Executive Branch of the Nation, Venustiano Carranza, expropriated the Hacienda "La Hormiga" and other private properties (including El Chivatito and Molino del Rey) due to their public utility. The decree states that they will be used to enlarge the ammunition factory, vital at that time. In 1917, it was occupied by General Alvaro Obregón, Secretary of War in President Carranza's cabinet. In 1919, the Martínez del Río family recovered their property from the government, but they were not able to put it up for sale until 1924. Between 1920 and 1922, General Plutarco Elías Calles, Secretary of State to President Obregón, lived there. Between 1923 and 1925, its was occupied by General Manuel Perez Treviño, Chief of Staff of the Obregón's Presidential Security Corps. From 1925, until a little after 1932, General Joaquín Amaro Domínguez, Secretary of War and the Navy during Calles' administration and for two years of President Pascual Ortiz Rubio's, lived there.

President Lázaro Cárdenas (President from 1934-1940) himself decided to leave Chapultepec Castle, until then, the presidential residence, so that the people of Mexico could enjoy its interior and its historical importance to the country. On November 20, 1940, the Castle of Chapultepec became a museum by presidential decree.

President Cárdenas and his family had already moved to the Hacienda "La Hormiga" in 1935, because its house and grounds satisfied the family's longing for nature. They planted many pine trees on the grounds and changed the original name to "Los Pinos", which also reminded them of the place by the same name in Tacámbaro, Michoacán, where the President and his wife had first met.

From 1935 to date, Los Pinos has been the official residence of the Constitutional President of the United Mexican States. The following Presidents have lived there: General Manuel Avila Camacho (1940-1946); Miguel Alemán Valdés (1946-1952); Adolfo Ruíz Cortines (1952-1958); Adolfo López Mateos (1958-1964); Gustavo Díaz Ordáz (1964-1970); Luis Echeverría Alvarez (1970-1976); José López Portillo (1976-1982); Miguel de la Madrid Hurtado (1982-1988); Carlos Salinas de Gortari (1988-1994); and the current resident, Doctor Ernesto Zedillo Ponce de León (1994-2000) and his family.