This information was taken from a website on Florence art- I could not have remembered all this:
“The magnificent sets of doors in gilded bronze that were to become even more famous than the temple itself were all originally designed and made for this entrance. Andrea da Pontedera, known as Andrea Pisano, was the first artist to work here and only took seven years (1330-1336) to complete his pair of doors: this was quite a noteworthy performance if we remember that this was the first time that a bronze cast of this size had ever been carried out in Gothic art.”
The door below is the bronze door on The Duomo (the Florence Cathedral.)
marschmadness 