It is part of the area of the Tiber valley in the eastern part of the Tuscia area of Viterbo. Rising in the middle of the historic centre is Baglioni castle. It was built in the early Middle Ages under the domination of the Baglioni family, which lasted until the seventeenth century, when the estate passed into the hands of Domitilla Cesi. At the end of 1669, the estate of Graffignano was transferred to the family of Federico Borromeo and, subsequently, to the seigniory of Scipione Publicola Santa Croce. Its rectangular shape with a cylindrical tower that is twenty meters tall makes it one of the most significant symbols of castle architecture in the Viterbo area. Around the castle, which is not open to visitors, are the so-called "case di dentro" with their characteristics outdoor stairs. The parish church has a copy of the famous painting by Guido Reni portraying St. Filippo Neri, a gilt and silver-plated wooden bust (eighteenth century) with the relics of the saint, an eighteenth-century bust of St. Charles Borromeo, a reliquary of the Holy Cross and a wooden crucifix of the Confraternity of the Holy Sacrament. Just outside the town is the sanctuary of Madonna del Castellonchio with several frescoes, votive offerings, and a painting from the Umbrian school depicting Our Lady with Saints Sebastian and Rocco.