Now housing the Museum of the Samnium, Rocca dei Rettori fortress has origins dating back to prehistoric times, with a Samnite necropolis (7th-6th century BC) and Roman baths later built on-site. The Lombards fortified the area, adding the Big Tower (Torrione), and an 8th-century Benedictine monastery was later merged into a castle under Duke Arechis II. By 1321, Pope John XXII restored it as a papal residence, and in 1586, it became a prison until 1865.
Perched on Benevento’s highest point, the Rocca consists of two main structures. The Big Tower (Torrione) is a 28-meter Lombard-built tower, modified over centuries, featuring Roman wall fragments, ogival double windows, and turrets. The Palazzo dei Governatori Pontifici is a three-floor palace with barbicans, framed windows, a colonnade, and 18th-century wooden ceilings. The lowest floor housed prison cells, while the upper halls boast elaborate decorations.
The rear garden contains Roman ruins, including slabs from the Via Traiana. A 1640 Lion Monument honoring Pope Urban VIII stands at the entrance, featuring a medieval lion atop an octagonal Roman pedestal.
Doune Castle was originally built in the thirteenth century, then probably damaged in the Scottish Wars of Independence, before being rebuilt in its present form in the late 14th century by Robert Stewart, Duke of Albany (c. 1340–1420), the son of King Robert II of Scots, and Regent of Scotland from 1388 until his death. Duke Robert"s stronghold has survived relatively unchanged and complete, and the whole castle was traditionally thought of as the result of a single period of construction at this time. The castle passed to the crown in 1425, when Albany"s son was executed, and was used as a royal hunting lodge and dower house.
In the later 16th century, Doune became the property of the Earls of Moray. The castle saw military action during the Wars of the Three Kingdoms and Glencairn"s rising in the mid-17th century, and during the Jacobite risings of the late 17th century and 18th century.