Battistero di San Giovanni (Florence Baptistery, or Baptistery of Saint John) is located in Piazza del Duomo, near the Cathedral of Santa Maria del Fiore and the Campanile di Giotto.
The Baptistery  was built between 1059 and 1128 thanks to the patronage of the powerful Guild of Calimala, so it is one of the oldest religious buildings in the city; it has octagonal shape and represent a characteristic example of the Tuscan Romanesque style, with its white and green marbles and the typical semi-pilasters and columns supporting rouded arches.
In the Florentine Baptistery many famous personalities of the city were baptized: among them the great poet Dante Alighieri, who mentioned it in his Divine Comedy.