Google Maps https://www.google.it/maps/place/Piazza+del+Nettuno,+3,+40121+Bologna+BO/@44.4946348,11.3397383,17z/data=!3m1!4b1!4m5!3m4!1s0x477fd495bfb6ed29:0x3016702821abdf3b!8m2!3d44.4946348!4d11.3419323