The Baptistery is one of the oldest buildings in Florence, constructed between 1059 and 1128 in the Florentine Romanesque style.
It is is renowned for its three sets of artistically important bronze doors with relief sculptures. The south doors were done by Andrea Pisano and the north and east doors by Lorenzo Ghiberti. The east doors were dubbed by Michelangelo the Gates of Paradise.
The Italian poet Dante and many other notable Renaissance figures, including members of the Medici family, were baptized in this baptistery. In fact, until the end of the nineteenth century, all Catholic Florentines were baptized here.
(Text source: Wikipedia, Video by Monika Csapo)