The central monument was unveiled in 1904, replacing an earlier fountain that occupied the square's center.
The statue depicts General San Martín pointing toward the Andes Mountains, symbolizing his historic military crossing.
The plaza is built on the site of the former 'Plaza Vieja', which was the social center of Mendoza before the 1861 earthquake necessitated a city redesign.
It contains a plaque commemorating the centenary of the Army of the Andes.
The surrounding irrigation ditches are part of the city's historic water management system designed to support non-native tree species in the desert climate.
Plaza San Martín serves as the historic and geographic heart of Mendoza's city center. The square is anchored by a prominent bronze equestrian statue of General José de San Martín, created by sculptor Luis Perlotti and mounted on a base of local granite. It is characterized by a grid-patterned layout featuring mature plane trees and abundant seating. The park serves as a central hub for urban life, often hosting local artisans and cultural events. It is framed by neoclassical architecture, including the nearby Basilica of San Francisco and various financial institutions. The plaza functions as a green corridor within the city's arid landscape, sustained by traditional acequias (irrigation ditches).
From the south entrance looking toward the equestrian statue with the sun positioned behind the photographer for optimal lighting.
Visit during the early evening to experience the local tradition of people-watching as the city transitions from work to social hours.
Look for the small plaques and markers around the perimeter to identify the historical significance of the surrounding buildings.
Carry a water bottle, as the plaza is located in a high-desert climate where humidity remains very low.
Avoid assuming the plaza is a remote park; it is a busy urban square surrounded by active traffic and business offices.