... but I don't know what it is. However, as most of these amazing and terribly expensive artifacts, the tale usually involves intrigue, deception and, of course, the Pope. For example, another beautiful, though not quite as impressive fountain had near it a plaque explaining that when it was built, the neighborhood (which is completely urban now) was on the suburban outskirts of town. Despite being funded by the city's taxes, the the artist included in the design several bees, which were the symbol of a household nearby. Apparently this increased the family's prestige, as it was a direct favor from the state, and thus the entire square kept the family's name alive well longer than the family itself.