From Florence wikipedia

The Florentine dialect forms the base of standard Italian and it became the language of culture throughout Italy[10] due to the prestige of the masterpieces by Dante Alighieri, Petrarch, Giovanni Boccaccio, Niccolò Machiavelli and Francesco Guicciardini.

The city attracts millions of tourists each year, and UNESCO declared the Historic Centre of Florence a World Heritage Site in 1982. The city is noted for its culture, Renaissance art and architecture and monuments.[11] The city also contains numerous museums and art galleries, such as the Uffizi Gallery and the Palazzo Pitti, and still exerts an influence in the fields of art, culture and politics.[12] Due to Florence's artistic and architectural heritage, Forbes ranked it as one of the most beautiful cities in the world in 2010.[13]