The Trevi Fountain is an iconic fountain in Rome, Italy, located in the Trevi district in the Quirinale. It is one of the most famous fountains in the world and is the largest Baroque fountain in the city. The fountain is made of travertine stone and stands 86 feet high and 161 feet wide. The design is based on the Roman aqueduct system, with the figure of Oceanus at its center and two Tritons flanking it. The fountain has been featured in several films, including Federico Fellini's La Dolce Vita, and it is a popular spot for tourists to make a wish by throwing a coin in the fountain.