Discover what lies beneath the Trevi District on a 45-minute guided tour through its underground passages. Roam through the three sections of the antiquarian and learn why this archaeological area is called the "City of Water". Start by making a wish at the iconic Trevi Fountain, the largest Baroque fountain in the city. Next, venture underground to marvel at ruins that date back to Ancient Rome. This history comes to life with the help of a professional guide, who will explain the story behind the Vicus Caprarius archaeological area. See how the water that flows from the Trevi Fountain filters through the ancient masonry of the archaeological area, continuing to supply the pipes and the pools of the luxurious Domus residence. Learn about the findings discovered during excavation, including precious polychrome marble coverings, the famous head of Alessandro Helios, a treasure trove of 800 coins, and the spatheia, a special African amphora for transporting oil. Then, at the end of the tour, taste a delicious gelato at one of Rome's famous historic ice cream shops at the Trevi Fountain.