Paciano was founded around the XIV century, on a spur of Monte Petrarvella. Its origins are still today very well testified by the town-walls with towers and access doors and by the Tower of Orlando: a ruin of a more ancient village few kilometers away from the town.
The church of S.Carlo is characterized by an elegant door dating back to XVII century. It accommodates, among the paintings of local painters, those of Francesco di Castel of della Pieve, which is believed to be the master of the Perugino. Other works of remarkable artistic interest are preserved in the church of S.Giuseppe: " Madonna della Misericordia" of the workshop of the Bonfigli, in the center of the Confraternita of the Sacramento: "Madonna e Santi"and in the church of SS. Rocco and Sebastiano: "Madonna and S. Sebastiano".