In the open countryside not far from town is the church of Sant'Egidio, built around 1512, based on plans by Sangallo the Younger. It is considered a small masterpiece of Renaissance art. It has a Greek cross layout topped by a low cupola that almost touches the roof over the cross vault and it has three identical facades. Inside is a lovely floor and fragments of sixteenth-century frescoes. Cellere is famous as the birthplace of Domenico Tiburzi, one of the most legendary figures in banditry in the Maremma area in the nineteenth century. The nearby town of Pianiano has preserved the characteristic layout of a medieval village, with the Rocca and the church of San Sigismondo.

Countryside and forests near the Timone ditch are of particular interest.

Tiburzi the bandit

They called him "the king of Lamone" after the terrible forests bordering Tuscany that, even today, have maintained their mysterious intrigue because of the dense underbrush and wild fauna. A native of Cellere (1836), Domenico Tiburzi has remained one of the most legendary bandits in the Maremma area of Viterbo. He dispensed justice with the motto of "steal from the rich to give to the poor". His first homicide (1867) involved a country guard working for the Marquis Torlonia. His life of adventure came to an end in October 1896 when he was taken by surprise by the Carabinieri forces in a farmhouse near Capalbio.