San Cristobal Hill, located in Santiago, Chile, has a height of 880 meters above sea level and a prominence of 280 meters, which makes it the fourth highest point in the city, only surpassed by the Manquehue, Lo Aguirre and Renca hills. Located between the communes of Providencia and Recoleta, it has the Bellavista neighborhood at its base.

It is part of a group of mountains that includes the hills Chacarillas, Los Gemelos and La Pirámide, all within the Metropolitan Park of Santiago, the largest urban park in Chile and one of the largest in the world, with approximately 722 hectares.

Originally, the hill was called Tupahue, which means "Sentinel" in Quechua, and was later renamed in honor of San Cristobal, patron saint of travelers, by Pedro de Valdivia. The first mention of the current name dates back to the 18th century, when Governor Manuel de Amat y Junyent described the geography of the region to King Carlos III. During the colonial era, quarries operated on its slopes that supplied stone for buildings such as the Cal y Canto Bridge and the Palacio de La Moneda.

In 1903, thanks to the donation of the American philanthropist D.O. Mills, the Mills Astronomical Observatory was installed on the summit, today called "Manuel Foster" and currently administered by the Pontificia Universidad Católica de Chile. Although it is no longer viable for astronomical research due to light pollution, in its time it was the largest telescope in the southern hemisphere.

In 1908, the shrine of the Immaculate Conception was inaugurated at the summit, with a large statue of the Virgin Mary that has become a visible symbol of Santiago. In 1916, Mayor Alberto Mackenna Subercaseaux promoted the idea of expropriating the hill to turn it into a public park. One of the first projects was a reforestation initiated in 1921, since the hill had no natural vegetation.

Over the years, irrigation canals, roads, the funicular in 1925, the National Zoo, the Victoria Tower and the Sanctuary Chapel were built. In the 1960's, Plaza Mexico, Tupahue swimming pool, Casa de la Cultura Anahuac and children's playgrounds were added. In 1966, all these services were consolidated under the name of Metropolitan Park of Santiago. The amphitheater of the hill received Pope John Paul II in 1987 and at its summit there are transmission antennas and a columbarium.

Access to the hill includes Avenida Zapadores, Pío Nono Street, Avenida Pedro de Valdivia Norte, Américo Vespucio Oriente and Camino La Pirámide. It can be climbed by car, bicycle, on foot or using the funicular and cable car, and from its summit there are panoramic views of Santiago and the Andes Mountains. In addition, the hill offers the possibility of visiting two swimming pools (Antilén and Tupahue), the Metropolitan Zoo and the cable car.