Los Andes

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Los Andes, founded on July 31, 1791 as Santa Rosa de Los Andes, is a Chilean city and commune located in the province of the same name, in Valparaíso Region ("Fifth Region" of Chile). It lies on the route between Santiago and Chile's primary border crossing with Argentina by way of the summit of the Uspallata Pass in the Andes mountain range.

According to the 2017 census of the National Statistics Institute, Los Andes spans an area of 1,248.3 km2 (482 sq mi) and has 66,708 inhabitants.

Los Andes stands at the beginning of the now derelict metre gauge Transandine Railway, opened in 1910, which once ran to Mendoza in Argentina, providing a link between the broad gauge line from Valparaiso to Los Andes, operated by the Chilean State Railway, and the broad gauge line from Mendoza to Buenos Aires operated by the Buenos Aires and Pacific Railway.