Considering the In Piazza della Signoria in Florence?
A VT member wrote the following comment about visiting Florence:
The Medici Family Crest by guell
Throughout Florence, you will without a doubt see this peculiar shield with six balls prominently displayed on buildings all over town. It is the family crest of the Medici, the most famous family in Florence.
For more information on the history of the Medici family go to this site:
http://es.rice.edu/ES/humsoc/Galileo/People/medici.html