When entering Stradun from either end, first thing you will see is one of the fountains built by Onofrio della Cava in 1438, when it was recognized that the insufficient water supply may endanger the existence of the City. Dubrovnik (which was called Ragusa at that time) had one of the first water supply systems in Europe. The Great fountain is closer to Pile Gate, and is a dome-like structure with 16 carved stone heads providing fresh drinking water from a river 12km away. The Small fountain is located at the opposite end of Stradun, right next to the Bell Tower. The fountains are a perfect spot for refreshment during hot summer days and a favourite meeting spot of the local youth.