Through the majestic gates of Pelle, the starting point of the ancient city is a small square, with a large circular fountain carved with sixteen masks in the center of the square, which introduces spring water more than a dozen kilometers away into the city, a water supply system that is still in use from the Middle Ages. Today, the outlet is connected to the iron water pipe, and the spring water is cool, which is worthy of being a good place to prevent heat and cool down in summer.