The two sea monster fountains (by Pietro Tacca)

In 1626 the sculptor Pietro Tacca (already the author of the famous group of the Four Moors placed at the foot of the monument to the Grand Duke Ferdinand I of the Medici) was commissioned two marble and bronze fountains with fantastic animals, shells, fish and other marine creatures as their subjects, to place themselves in the Darsena to be able to supply water to the crews of the galleys moored there.
However, the fountains never reached Livorno (probably because the jet of water they delivered was too modest to satisfy the needs of so many sailors), but were diverted to Florence, where they are on display in Piazza SS. Annunziata, causing strong resentment in the people of Livorno; therefore, after three centuries the Municipality of Florence wanted to give them not a copy of the two fountains, but a second original (made from the same mold from which Tacca's work was born). The municipality of Livorno then ordered, at its own expense this time, another "clone" and decided to place the two monuments at the end of Via Grande, not far from the statues of the Grand Duke and the Four Moors.