Trevi Fountain is the largest baroque fountain in Rome and the most beautiful in the world. It is told that by throwing a coin in to the fountain ensures a return to Rome. 

The fountain is built of Travertine stone, a mineral consisting layered calcium carbonate formed drom spring waters especially hot springs. 

There is a three coin theory about the fountain

If you throw one coin: you will return to Rome.
If you throw two coins: you will fall in love with an attractive Italian.
If you throw three coins: you will marry the person that you met.

Trevi Fountain is right in the historical center, so can't be reached by private transport. Options are:

- Walk from another attraction such as the Pantheon or the Spanish Steps

- Nearest Metros are Spagana (Spanish Steps) and Barberini

- From Roma Termini Station: Get the metro (line A) towards Battistini and after two stops get off at Barberini - Fontana di Trevi. Continue by walk along Via del Tritone until Via della Stamperia that leads to Piazza di Trevi.

- By Bus: From Termini station take bus lines 175 or 492 and get off at the stop Tritone/Fontana di Trevi