The two fontane dei mostri marini are located in the Santissima Annunziata plaza in Florence.
Wikipedia https://en.wikipedia.org/wiki/Fontana_dei_mostri_marini
Address 6 Piazza della Santissima Annunziata, Firenze 50121, Italy
Coordinates 43°46'35.759" N 11°15'37.846" E
