Alto de la Alianza

The Alto de la Alianza Monumental Complex (Spanish: Complejo Monumental Alto de la Alianza) is a historical monument and landmark complex in the south of Peru, near the city of Tacna.

The monument is located in the site of the Battle of Tacna, a battle that took place on May 26, 1880 between the allied Bolivian and Peruvian forces against the Chilean Army that resulted in the alliance's retreat and the loss of their strongholds in Arica and Tacna, as well as a period known locally as the captivity of Tacna, part of the larger Chilean–Peruvian territorial dispute that lasted about 50 years.