A rare turtle-shaped Renaissance fortress designed by Francesco di Giorgio Martini for the Montefeltro court, famous as the secret wartime refuge that sheltered thousands of Italian artworks during the Second World War.
The Rocca Ubaldinesca crowns the hill town of Sassocorvaro Auditore, in the Montefeltro hills of the province of Pesaro and Urbino in northern Marche. It was built around 1475 by Francesco di Giorgio Martini, the brilliant Sienese architect and military engineer who also worked on the Palazzo Ducale di Urbino, for Ottaviano Ubaldini della Carda, kinsman and counsellor of Duke Federico da Montefeltro. The fortress is one of the earliest and most distinctive examples of the new military architecture developed in response to gunpowder artillery: its rounded, sloping walls, designed to deflect cannon fire, give the building an unusual organic form often likened to a tortoise or a crouching animal, quite unlike the angular towers of earlier castles. Inside, beyond the military exterior, lie more refined spaces including a small jewel-box theatre and frescoed rooms that reflect the cultivated Montefeltro court. The Rocca owes its modern fame to a remarkable episode of the Second World War: in the early 1940s the art superintendent Pasquale Rotondi chose this remote fortress as a secret deposit, and within its walls he hid some ten thousand artworks from across Italy, including masterpieces evacuated from Venice and the Marche, to protect them from bombing and looting. This wartime art-rescue story is commemorated in the fortress today, alongside collections that may include period furnishings and reproductions illustrating the rescue. Set above its small town with views over the Montefeltro countryside, the Rocca Ubaldinesca combines a landmark of Renaissance military engineering with one of the most moving stories of cultural heroism in modern Italian history.
Why it matters
Designed by Francesco di Giorgio Martini around 1475, the Rocca Ubaldinesca is a landmark of early anti-artillery military architecture and the fortress that secretly safeguarded thousands of Italian artworks during the Second World War.
Location
Piazza Battelli, 61028 Sassocorvaro Auditore (PU)
Highlights
- Rounded, tortoise-like fortress designed by Francesco di Giorgio Martini
- Early example of anti-artillery Renaissance military architecture
- Small jewel-box theatre and frescoed rooms within the military shell
- Wartime secret refuge that hid some 10,000 Italian artworks
- Hilltop views over the Montefeltro countryside
Tips for visiting
- View the rounded military form from the approach road for the full effect
- Confirm current admission and opening at the museum, as hours are seasonal
- Focus on the Second World War art-rescue story, the highlight of the visit
- Weekend afternoons are the most reliable opening times; weekdays may need booking
- Combine with nearby Urbino and the Montefeltro hill towns
When to visit
Weekend afternoons in spring and autumn are the most reliable for opening and pleasant for the hilltop views over the Montefeltro.
Accessibility
The fortress sits at the top of a hill town reached by sloping streets, and its interior has historic staircases, which limits wheelchair access to upper rooms; visitors with specific needs should confirm arrangements before arriving.
Frequently asked questions
Is the fortress English-language friendly?
Some information is available in English, and English-language visits can be arranged, though parts of the interpretation are primarily in Italian.
How long does a full visit take?
A visit takes about an hour, covering the fortress interior, the small theatre and the wartime art-rescue displays.
Can you visit with kids?
Yes. The unusual castle shape and the secret-treasure wartime story make it engaging for children.