San Juan Province is a province of Argentina, located in the western part of the country. Neighbouring provinces are, moving clockwise from the north, La Rioja, San Luis and Mendoza. It borders Chile
View of the Río Blanco in Calingasta
Domingo Faustino Sarmiento, Governor of San Juan in 1862–64, he enacted the nation's first compulsory education laws, which became a national policy when he was elected president in 1868.