Civitella d'Agliano is a (municipality) in the Province of Viterbo in the Italian region of Latium, located about northwest of Rome and about northeast of Viterbo.
Civitella d'Agliano borders the following municipalities: Alviano, Bagnoregio, Castiglione in Teverina, Graffignano, Guardea, Montecchio, Orvieto, Viterbo.
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