Tivoli (ancient Tibur), town in central Italy, in Lazio Region, on a slope of the Sabine Mountains near Rome. At Tivoli the Aniene River (ancient Anio) issues from the mountains in picturesque falls that provide a source of hydroelectric power for the town. Industries include the manufacture of paper. Tivoli was a favorite summer residence of wealthy Romans from the 4th century BC. Among the notable sights are the imposing ruins of the magnificent villa constructed for the Roman emperor Hadrian and the famous Villa d'Este, dating from about 1550. The villa's garden is considered the finest Renaissance garden in Italy, with a commanding view of the surrounding countryside. Population (1996) 52,372.
