Catania, the main city of the homonimous metropolitan area in Sicily, is the heart of an urban centre of about 800,000 inhabitants at the foot of Mount Etna. It is the economic and infrastructural centre of the South-Eastern Sicily District. Founded in 729 BC by the Calcidians from Naxos, the city features a millenial history characterised by different dominations. Their remnants enrichen its artistic, architectonic, and cultural heritage. Under the Aragona dynasty, it was the capital of the Kingdom of Sicily, and the oldest University of the island was built in 1434 on King Alfonso V’s request.