Origins of the Castello
Together with Montegiardino, Faetano and Serravalle, Fiorentino was among the castra subdita, the castles that joined the Republic in 1463 at the end of the war of the league of Pius II against Sigismondo Pandolfo Malatesta. Once conquered, the fortified centre was razed by the Sammarinese to prevent it from returning to enemy hands: of the medieval Castello only the ruins on Monte Seghizo remain.
In the 15th century Fiorentino was the most threatening outpost of the lords of Rimini, only three kilometres from the capital. For this reason it still keeps today the nickname Castellaccio, given at the time of the siege.
Territory and borders
The Fiorentino district was also called Land of the Castelli because of other fortifications now vanished: the tower of Torricella on Monte San Cristoforo, demolished in 1465, and the Castello di Pennarossa on Monte Moganzio, of which the foundations and cistern carved into the rock remain.
The Castello borders five Castelli (Chiesanuova, City of San Marino, Borgo Maggiore, Faetano and Montegiardino), a record together with Borgo Maggiore, as well as the Italian municipalities of Monte Grimano Terme and Sassofeltrio. The main curazie are Cerbaiola, Pianacci, Spaccio Giannoni and Castellaccio.
| Residents | 2.597 (31 March 2025) |
|---|---|
| Surface | 6,56 km² |
| Altitude | town centre at about 260 m a.s.l. |
| Hamlets/Curazie | Cerbaiola · Pianacci · Spaccio Giannoni · Castellaccio |
| Borders with | Chiesanuova, City of San Marino, Borgo Maggiore, Faetano and Montegiardino |
| Italian municipalities | Monte Grimano Terme (Pesaro and Urbino) and Sassofeltrio (Rimini) |
Source of demographic data: Office of Informatics, Technology, Data and Statistics of the Republic of San Marino, Statistical Bulletin - Q1 2025, Table 1.7.
Places and traditions
In Fiorentino stands the Federico Crescentini sports ground, the second largest in the Republic by capacity after the Olympic Stadium of Serravalle. The usual venue for youth football matches and national cups, it hosts the home games of two local clubs: S.P. Tre Fiori and F.C. Fiorentino.
The ruins of the old Castello on Monte Seghizo are a destination for panoramic walks. From the summit the gaze takes in the Ausa valley and the nearby Castelli of Chiesanuova and Montegiardino. The modern core of the Castello gathers around the Casa del Castello along via della Rena.
Heraldry of the Castello
The coat of arms shows three red roses on a yellow field, in memory of the lush and wild nature of the territory: «Or, three roses gules budded of the field».
For more on Sammarinese heraldic symbology: flag and coat of arms of the Republic.