Cordoba is one of the oldest colonial Spanish cities in what is now Argentina, founded in 1573. Jesuits played an important role in the city, arriving here in the early 17th century and establishing the University of Cordoba in 1613, now the oldest university in Argentina. Cordoba is a UNESCO World Heritage site with many architectural monument, especially in the so-called Jesuit Block – the University with its campus, the Cordoba Cathedral, Iglesia de la Compania de Jesus, Cabildo, Basílica de Santo Domingo, Iglesia San Francisco, and much more. All centered around the Plaza San Martin. In a classic Spanish colonial setup, the city is a perfect grid of streets radiating from the central plaza.