Umbria is a region of central Italy. It includes Lake Trasimeno and Marmore Falls, and is crossed by the Tiber. It is the only landlocked region on the Apennine Peninsula. The regional capital is Perugia. The region is characterized by hills, mountains, valleys and historical towns such as the university centre of Perugia, Assisi, Terni, Norcia, Città di Castello, Gubbio, Spoleto, Orvieto, Todi, Castiglione del Lago, Narni, Amelia, Spello and other small cities.