Rome constitutes one of Italy's 8,101 communes, and is the largest both in terms of land area and population. It is governed by a mayor, currently Gianni Alemanno, and a city council. The seat of the commune is the Palazzo Senatorio on the Capitoline Hill, the historic seat of the city government. The local administration in Rome is commonly referred to as "Campidoglio", the Italian name of the hill.