The Fountain of Neptune can be found in Florence in the Piazza della Signoria. It was completed in 1566 by Bartolomeo Ammannati and Giambologna. Initially Baccio Bandinelli was given the commission, however, he died after designing the model and never got to actually work on the fountain. It was originally commissioned for the wedding of Francesco I de’ Medici to the grand duchess Johanna of Austria in 1565. The statue was meant to represent Florence’s dominance over the sea. Neptune’s face is supposedly modeled after the face of Cosimo l de’ Medici. When it was finished, the Florentines actually hated it, they called it the “white giant”. It was severely damaged over the years, at one point being used as a basin for washing and public shaming which caused the base of the statue to become warn and crumble. It was also heavily vandalized; people broke off pieces, threw things at the statue, and even stole an entire satyr- which was never found. In 2007 the fountain underwent a complete restoration and security regarding the fountain was increased.
Apparently there’s also a superstition that if students run two counter clockwise laps around the fountain it’ll help them pass a difficult exam.