San Leo: the Montefeltro Fortress Where Cagliostro Met His Fate

A rock suspended between history and legend

San Leo appears without warning, like a medieval mirage. Perched on a limestone spur that rises vertically from the Marecchia valley, this borgo of the Montefeltro defies gravity and time with equal stubbornness. Dante cited it in the Purgatorio, the Romans called it Mons Feretrius, and for centuries it was considered the most impregnable fortress in Italy. Yet today, while tourist crowds pour into nearby San Marino, San Leo remains a secret whispered among history enthusiasts and the most curious travellers.

The road that climbs to the borgo is an experience in itself: a single lane carved into the rock, with hairpin bends that reveal ever more vertiginous views at every turn. When you reach the summit, the panorama takes your breath away: the hills of the Montefeltro stretch all the way to the Adriatic on one side and the Apennines on the other, a mosaic of fields, woods and borghi that looks lifted from a fifteenth-century painting.

The fortress and the mystery of Cagliostro

The fortress of San Leo is the beating heart of the borgo, a masterpiece of military architecture that dominates the landscape from the top of the crag. Remodelled in the fifteenth century by Francesco di Giorgio Martini for the Montefeltro lords, its shape follows the profile of the rock perfectly, making any siege impossible. The massive walls, corner towers and walkways offer a living lesson in Renaissance military engineering.

But what makes the fortress unforgettable is the cell where Count Cagliostro was imprisoned. Giuseppe Balsamo — adventurer, alchemist and freemason — was locked up here in 1791 on the orders of the Holy Office. His cell, carved into a well in the rock with a single opening at the top, is a place that sends shivers down your spine: he died here in 1795 after four years of total isolation. You can visit it today, and the claustrophobic atmosphere tells you more about the harshness of imprisonment than any book ever could.

The cathedral and the parish church

Descending from the fortress, the borgo reveals further treasures. The cathedral, dedicated to San Leone, dates to the twelfth century and preserves an austere Romanesque beauty — a sandstone facade and a three-nave interior. But it is the pieve, a little further down, that is the true jewel: dating to the ninth century, it is one of the oldest sacred buildings in the Montefeltro, with its reused Roman columns and an atmosphere that breathes early Christianity.

Piazza Dante Alighieri is the borgo's drawing room, a harmonious rectangle dominated by the Palazzo della Residenza and the civic tower. Here life flows at exactly the right pace: a coffee at an outdoor table, the newspaper, the chatter of residents who all know each other by name. The Palazzo dei Conti di Cagliostro now houses a museum dedicated to the adventurer, with original documents and reconstructions of his trial.

The flavours of the Montefeltro

The cuisine of San Leo is that of inland Romagna — hearty and without frills. The piadina here is thicker and more rustic than on the coast, stuffed with squacquerone cheese and wild rocket, or with Carpegna DOP prosciutto, produced in the nearby mountains. Passatelli in broth are the traditional first course: irregular threads of bread, Parmigiano and egg that melt in a capon broth.

But the king of the table is the fossa cheese, aged for three months in the tufa pits of the nearby borgo of Talamello. Every August the wheels are lowered into straw-lined pits, and in November the sfossatura becomes a collective celebration. The result is a cheese with an intense, slightly peppery flavour, perfect with a drizzle of chestnut honey.

- Passatelli in broth — the emblematic first course of inland Romagna

- Piadina with squacquerone and rocket — the perfect snack after visiting the fortress

- Fossa cheese from Talamello — aged in the ancient tufa pits

- Rabbit in porchetta — a hill-country specialty with wild fennel

How to get there and when to visit

San Leo lies about 30 kilometres from Rimini. By car, take the Marecchiese (SS258) as far as Pietracuta, then climb towards the borgo following the signs. There is no direct rail connection: the nearest station is Rimini, from which you can take a Start Romagna bus (roughly 50 minutes). The car park sits at the foot of the borgo, from which you walk up in a few minutes.

The best months to visit are spring and autumn. From April to June the hills are a green carpet dotted with flowers, temperatures are mild and the Montefeltro trails invite long walks. September and October bring the autumn foliage and the cheese-pit season, with events and tastings. Summer can be hot, but evenings are cool and the borgo hosts concerts and performances under the stars against the backdrop of the fortress.

Not to be missed in the surroundings: the borgo of Pennabilli with the places associated with Tonino Guerra, the sanctuary of the Madonna di Saiano balanced on its crag, and the Onferno caves, a karst system populated by thousands of bats. San Leo is also an ideal stop along the Way of St Francis from Rimini to La Verna.