The Trevi Fountain was built in the 18th century at the request of Pope Urban VIII. Prior to his commission, it was the site of the Roman Empire's Aqua Virgo aqueduct terminal.
A popular legend promises those who toss a coin into the fountain a return trip to Rome. The proper technique is to turn your back to the fountain and toss the coin with your right hand over your left shoulder.
Another tradition holds that if you toss two coins into the fountain, you will bring marriage. If you toss three coins, you will divorce.
The Trevi Fountain collects approximately 3,000 euros ($4,250 U.S. dollars) in coins each day. This money is used to fund different charities, including a food bank and the Italian Red Cross.
The fountain depicts a scene with Oceanus, god of water, taking center stage. A maiden in the structure points to the source of the water, which is the original Roman aqueduct.