Siena

Siena
Comune di Siena
View of Piazza del Campo (Campo Square), the Mangia Tower (Torre del Mangia) and Santa Maria in Provenzano Church
Siena
Location of Siena in Italy
Siena
Siena (Tuscany)
Siena
Siena (Europe)
Coordinates: (53893) 43°19′07″N 11°19′50″E / 43.31861°N 11.33056°E / 43.31861; 11.33056
CountryItaly
RegionTuscany
ProvinceSiena (SI)
FrazioniAbbadia, Agostoli, Bolgione, Colle Malamerenda, Costafabbri, Costalpino, Fogliano, Ginestreto, Isola d'Arbia, Le Tolfe, Monteliscai, Pieve a Bozzone, Presciano, Sant'Andrea a Montecchio, Santa Regina, Taverne d'Arbia, Val di Pugna, Vico d'Arbia, Vignano, Volte Alte
Government
 • MayorNicoletta Fabio (centre-right)
Area
 • Total
118.53 km2 (45.76 sq mi)
Elevation
322 m (1,056 ft)
Population
 (2025)
 • Total
52,991
 • Density447.07/km2 (1,157.9/sq mi)
DemonymSenese
Time zoneUTC+1 (CET)
 • Summer (DST)UTC+2 (CEST)
Postal code
53100, 53010
Dialing code0577
Patron saint
Saint day1 December
Websitewww.comune.siena.it
Official name"Historic Centre of Siena"
CriteriaCultural: (i)(ii)(iv)
Reference717
Inscription1995 (19th Session)
Area170 ha (420 acres)
Buffer zone9,907 ha (24,480 acres)

Siena (/siˈɛnə/ see-EN, Italian: [ˈsjɛːna, ˈsjeːna] ; traditionally spelled Sienna in English; Latin: Saena Iulia) is a city in Tuscany, in Central Italy, and the capital of the province of Siena. With a population of 52,991, it is the 12th-largest city in the region as of 2025.

The city is historically linked to commercial and banking activities, having been a major banking centre until the 13th and 14th centuries. Siena is also home to the oldest bank in the world, the Monte dei Paschi, which has been operating continuously since 1472 (1472). Several significant Mediaeval and Renaissance painters were born and worked in Siena, including Duccio di Buoninsegna, Ambrogio Lorenzetti, Simone Martini and Sassetta, and they influenced the course of Italian and European art. The University of Siena, originally called Studium Senese, was founded in 1240, making it one of the oldest universities in continuous operation in the world.

Siena was an important city in medieval Europe, and its historic centre is a UNESCO World Heritage Site, which contains several buildings from the 13th and 14th centuries. The city is famous for its cuisine, art, museums, medieval cityscape and the Palio, a horse race held twice a year in Piazza del Campo.

In October 2025, Siena won the European Green Leaf Award for 2027.