San Miguel de Tucumn (usually referred to as simply Tucumn) is the capital of the Tucumn Province, located in northern Argentina at 1,311 kilometres (815mi) from Buenos Aires. It is the fifth biggest city of Argentina after Buenos Aires, Crdoba, Rosario and Mendoza, and it is also the most important city of Northern Argentina. It was founded in 1565 by Spanish Conquistador Diego de Villarroel during an expedition from Peru, and was moved to its present site in 1685. The city is bordered on the north by Las Talitas (Taf Viejo), on the east by Banda del Ro Sal and Alderetes (Cruz Alta), on the west by the city of Yerba Buena, and on the south by Lules. The city sits on the slopes of the Aconquija mountains, the easternmost mountain range before the large Chaco-Pampean flats. It is the commercial center of an irrigated area that produces large quantities of sugarcane, rice, tobacco, and fruit, and provides the province with its nickname, the Garden of the Republic.