Gubbio is at the centre of a vast district extending from the Apennines of Umbria and the Marches and from the Serra di Burano as far as the hills overlooking Valtiberina, between the valley of the Assino and that of the Chiascio. It is an area rich in beauty spots, served by an extensive network of roads and paths, and dotted with castles, churches, abbeys and monasteries: