Located in the great Mendoza, it bears this name in honor of the founder of the city, on March 2, 1561, Don Pedro del Castillo. In this picturesque square forested with a very varied vegetation brought from Misiones (Argentina), the most diverse variety of Palm trees from the Canary Islands (Spain) and Brazil, you can see in its surroundings the Majolica posters that indicate the important events of the city within the founding area. It was the epicenter of the religious and social life of the city until it was destroyed by an earthquake in 1861. In this square, General San Martín proclaimed the Virgen del Carmen de Cuyo General of the Army and the Flag of the Army of the Andes and the Staff of Command.

After having received various names such as: Plaza de Armas (1562), Plaza Independencia (1810), Plaza de la Constitución, Plaza Vieja and Plaza del Matadero, finally in the 20th century it received its current name. The location is that of the square and the data of the Ministry of Tourism of Mendoza. The location is that of the Plaza, the data of the Ministry of Tourism of Mendoza