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Forte di San Leo

Castles & palaces ·San Leo ·Open now
4.78.5K
#2Things to do in San LeoMost reviewed in San LeoTravelers' Choice 2025
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About

Forte di San Leo is a castle and museum on a rocky spur above San Leo, overlooking Italy’s Marecchia valley.

More photos 11

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Forte di San Leo — Stone towers and defensive walls seen from the fortress plaza Stefano.cintiluciani · CC BY-SA 4.0 · edited
Forte di San Leo — Stone towers and defensive walls seen from the fortress plazaForte di San Leo — Long stone ramparts and a round tower viewed from belowForte di San Leo — A fortress tower and stone parapet above the surrounding valleyForte di San Leo — The fortress and its round towers above the forested ridgeForte di San Leo — Broad view of the fortress walls and towers across the hillsideForte di San Leo — Long fortress façade and battlements above the wooded slopeForte di San Leo — The upper fortress perched above a rugged rocky cliffForte di San Leo — A round tower and fortress buildings on the cliff edgeForte di San Leo — Fortress towers rise above trees and steep rock slopesForte di San Leo — Distant fortress walls crowning the rocky hill above greeneryForte di San Leo — Close view of the fortress's round stone tower and arches

Why go

  • The fortress where Count Cagliostro died.

Opening hours

Today10:00 – 17:00Show all
Monday10:30 – 16:15
TuesdayClosed
Wednesday10:30 – 16:15
Thursday10:30 – 16:15
Friday10:30 – 16:15
Saturday10:00 – 17:00
Sunday10:00 – 17:00

Don't miss

  • Piazza d’ArmiThe fortress’s enclosed parade ground.Inside the fortress
  • Round towers and curtain wallTwo tall circular towers with machicolations stand at the ends of a massive corbeled curtain wall.Newer northeast section
  • Older keepIts square turrets and Gothic entrance.Older section of the fortress

Interesting facts3

1/3

  1. The defensive redesign aimed to protect the northern boundary of the duke’s territory.

    Forteresse de San Leo - Wikipedia

  2. Stendhal set the imprisonment of the pope’s Carbonari prisoners at San Leo in Vanina Vanini.

    Forteresse de San Leo - Wikipedia

  3. A battle for the fortress appears in Giorgio Vasari’s fresco in the Sala di Leone X at Palazzo Vecchio.

    Forteresse de San Leo - Wikipedia

Shorts

History

Federico da Montefeltro and Battista Sforza owned the castle as a fortified palatial retreat.

  1. Roman eraThe Romans built the first fortification on the mountain.
  2. 961–963Otto I besieged Berengar II here; San Leo was a frequent refuge for Berengar.
  3. 14th–15th c.The Malatestas captured the fortress in the second half of the 14th century and shared control with the Montefeltros until the mid-15th century.
  4. 1441Federico da Montefeltro took the fortress in a daring assault and later commissioned its rebuilding.
  5. Second half of 15th c.Francesco di Giorgio Martini redesigned the defenses, giving the fortress its present defensive form.
Show all
  1. 1503Guidobaldo da Montefeltro regained his lands after the pope’s death.
  2. 1527–1631Under Della Rovere ownership, the fortress became a prison, with former soldiers’ quarters converted into cells.
  3. 1843–1846Felice Orsini was imprisoned at the fortress; he later attempted to assassinate Napoléon III.
  4. 1906The fortress ceased serving as a prison and subsequently housed a military disciplinary company.
  5. TodayThe fortress houses a museum and an art gallery.

Sources: Forte di San Leo - Wikipedia · Forte di San Leo - Wikipedia · Forteresse de San Leo - Wikipedia · Forte di San Leo - Wikipedia · checked 25 Sep 2026

Where
Via Giacomo Leopardi, San Leo

Plan from here: A day out →

Questions and answers

What collections does Forte di San Leo house?

The rooms house an arms museum and an art gallery; the fortress also hosts exhibitions.

Was Forte di San Leo also a residence?

Yes. Alongside its military structures, the complex included a residential wing.

How did attackers overcome Forte di San Leo’s steep cliff?

A carpenter devised a very long ladder that enabled attackers to scale the cliff and capture the fortress.

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