Postignano, a hamlet of Nocera Umbra, has a history that dates back to the Lombard era. Strategically placed to guard the Via Flaminia from enemy incursions, its fortress was initially inhabited by Lombard nobles, descendants of the Arimanni of the first era. In 1150, San Rinaldo was born here and became bishop of Nocera, giving Postignano a significant presence in ecclesiastical history.
In 1217, it was subjected to Assisi and subsequently passed under the dominion of the Trinci of Foligno. Inhabited until the 14th century, the castle then passed to the Apostolic Chamber and in the 16th century it became unsafe and was abandoned. Its imposing ruins are now visible even from afar.