Montopoli di Sabina is a town and comune (municipality) in the Province of Rieti in the Italian region Latium, located about 40 kilometres (25 mi) northeast of Rome and about 20 kilometres (12 mi) southwest of Rieti. In 2011, it had a population of 4,222.
The town was first mentioned in 1055, in a document of Farfa Abbey. It is locally known as The Town of Privateers (Italian: Il paese dei Corsari).
Montopoli, located in the southwestern corner of the province, at the borders with the one of Rome, borders with the municipalities of Castelnuovo di Farfa, Fara in Sabina, Fiano Romano (RM), Nazzano (RM), Poggio Mirteto, Salisano and Torrita Tiberina (RM). Its southwestern borders with Fiano are crossed by the Tiber river.Montopoli counts the hamlets (frazioni) of Bocchignano, Casenove, Colonnetta La Memoria, Ferruti, Granari, Granica, Ponte Sfondato, Ponticchio and Santa Maria.
The Modern Automata Museum, founded in 2001, is located in the town
The cyclopean masonry of Grotte di Torri is located nearby the village of Ponte Sfondato