The town's sights include: • The Castle, originally built in the High Middle Ages, with the characteristic angle rounded towers. • The Cathedral, a Baroque edifice designed by
Pietro da Cortona, rebuilt by
Carlo Rainaldi between 1671 and 1695. The bell tower is from 1734. It houses a
Tryptych of Christ by the Viterbese painter Gabriele di Francesco (15th century). • The church of
Santa Maria della Provvidenza (11th century), restored in Baroque style, although still retaining a three-floors
Romanesque belfry. The interior, with a single nave, houses some frescoes from the 15th century. • The ruins of the church of St. Andrew (12th-13th centuries), with a belfry from 1436. • Church of
Santa Maria della Pace, began in 1581 and variously attributed to
Jacopo Barozzi da Vignola or Rainaldi. It houses paintings by
Sebastiano Conca,
Cavalier D'Arpino and a tabernacle by Sansovino. • The suggestive basilica church of ''Sant'Eusebio
, along the Via Cassia, 3 km in direction of Rome. Located on a wide alture, it was built by monks escaped from Palestine in the 7th and 8th centuries. Traces of the ancient coenoby and the belfry can still be seen. The interior of the current edifice has a nave with aisles of irregular dimensions, with 12th-13th centuries frescoes and a Madonna with Child'' from the 15th century. It is dedicated to
St. Eusebius,
bishop of Sutri which is nearby. • Villa Lina. A villa with extensive botanical gardens, built by Ulisse Igliori for his wife Lina in 1928 and currently owned and operated as a luxury
bed and breakfast. == Culture ==