Completed in 1762 to a design by Nicola Salvi, this spectacular Baroque fountain features a mythological sculptural composition of Neptune, god of the sea, flanked by two Tritons: one Triton labours to control a violent sea-horse, the other controls a pacified creature, both symbolising the dual nature of the world's oceans. The location of the Trevi fountain marks the terminus of the ancient Aqua Virgo aqueduct, completed in 19 BCE in order to supply the Baths of Agrippa, and is so named on account of its position at the junction of three roads (tre vie). The legend says that one who throws a coin in the fountain shall one day return to Rome. The coins in the fountain are regularly collected to finance charities. The fountain has been made even more famous by the 1954 film, Three Coins in the Fountain, and by a famous scene in Federico Fellini's film La Dolce Vita. According to popular superstition and custom, throwing coins with one's right hand over one's left shoulder into the Trevi Fountain is a practice endowed with good luck. Throwing one coin ensures that the thrower will return to Rome; throwing two coins will ensure that the thrower will fall in love with a beautiful Roman girl (or handsome boy); throwing three coins, finally, ensures that the thrower will marry that girl or boy in Rome itself.