The Plaza San Martín is one of the most representative public spaces of the city of Lima, Peru. It is located at the ninth block of Colmena avenue, within the Historic Centre of Lima which was declared a World Heritage Site in 1988 by UNESCO. It is located near the Plaza Mayor of Lima and is connected to it by the Jiron de la Union. Its central monument gives homage to Peru's liberator, José de San Martín.