"Fontana di Nettuno" by Bartolomeo Ammannati

The Fountain of Neptune is a fountain in Florence, Italy, situated on the Piazza della Signoria (Signoria square), in front of the Palazzo Vecchio.

This work by Bartolomeo Ammannati (1563–1565) and some assistants, such as Giambologna, was commissioned on the occasion of the wedding of Francesco I de' Medici with grand duchess Johanna of Austria in 1565. The assignment had first been given to Baccio Bandinelli, who designed the model but he died before he could start working on the block of Apuan marble.