The Trevi Fountain is one of the most famous landmarks in Rome and is a popular tourist destination. It is an iconic Baroque fountain that was designed by Italian architect Nicola Salvi in 1762 and is believed to be the largest Baroque fountain in Rome. The fountain is the ending point of the Aqua Virgo, an aqueduct built in 19 BC. It is also known for the legend that if you throw a coin into the fountain, you will return to Rome one day.