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The Castle of St Martin in Priverno: Cardinal Gallio's Fortified Villa Among Monumental Oaks
Between the Amaseno valley and the Abbey of Fossanova, in the Priverno countryside, the Castello di San Martino is actually a fortified Renaissance villa. It was built between 1565 and 1569 by Cardinal Tolomeo Gallio, secretary to popes and governor of the provinces of Campagna and Marittima. The ruins of a small church dedicated to St Martin already stood on the site. And the fortress-like appearance — square ground plan, four corner towers, massive buttresses — speaks of an age when even cardinals slept more soundly behind thick walls.
From the Camaldolese to the Borghese
In 1597 Gallio donated the entire complex to the Camaldolese family, on the condition that they build a church and a monastery. But in 1652 Innocent X suppressed the monastic communities, and the monks left. Centuries of ownership disputes followed, until in the late 19th century the Borghese princes — already lords of Fossanova — arrived, and were followed in 1914 by the Di Stefano family. The Borghese coat of arms still stands out on the rusticated main gateway.
The Monumental Wood
Since 2019, the 24 hectares of oak woodland surrounding the castle have been designated a Natural Monument. Four trees — a stone pine, a Hungarian oak, a Turkey oak and a cork oak — are listed in the Register of Monumental Trees of Lazio. Today the park is open to the public, with trails, picnic areas and a former chapel preserving two frescoes: of Pope Pius V, who was a guest here, and Cardinal Gallio himself.
