Tivoli

Town in Lazio, Italy, 25 km/15 mi northeast of Rome, Italy; population (2001) 49,300. It has the remains of Hadrian's Villa, with gardens; and the Villa d'Este, with Renaissance gardens laid out in 1549 for Cardinal Ippolito d'Este. Wine is produced, and travertine (a decorative building stone) is quarried locally.

Tivoli stands on the Aniene, where the river forms a series of falls down to the Campagna di Roma; these falls now produce hydroelectric power for Rome. In the 1st century BC, at the time of the Roman poet Horace, Tibur was the resort of wealthy Romans, and there are ruins of Roman villas, mausolea, aqueducts, and a temple of Vesta. The modern town has a cathedral.