Travelers are voting Guinigi Tower and David-Michelangelo as the best monuments in Siena. There are 2 monuments in Florence a city just 33 km from Siena and 2 monuments in Calenzano which is 40 km distant. The most popular of these are Guinigi Tower in Florence and David-Michelangelo in Calenzano. You can find 2 monuments in Tuscany and 28 monuments in the country of Italy. Our members favorite in Tuscany is Guinigi Tower and Trajan's Column is the top pick in Italy. Want more? Check out our map of monuments in Siena.