Travelers are voting Ponte Vecchio, Piazza della Signoria and Fountain of Neptune as the best of 10 key buildings in Florence. There are 10 key buildings in Siena a city just 31 km from Florence and 4 key buildings in Lucca which is 37 km distant. The most popular of these are Ponte Vecchio in Siena and Leaning Tower of Pisa in Lucca. You can find 12 key buildings in Tuscany and 88 key buildings in the country of Italy. Our members favorite in Tuscany is Leaning Tower of Pisa and San Siro is the top pick in Italy. Want more? Check out our map of key buildings in Florence.