While the Trevi Fountain in Rome is undergoing restoration, it's time to brush up on a few facts about one of the city's largest and most spectacular ornaments.
1. 'Trevi' means 'three-ways'
The name 'Trevi' means 'three-ways' and is said to refer to the junction of three roads on Piazza dei Cruciferi. There was also a famous Goddess named Trivia. She protected the streets of Rome and had three heads so she could see everything going on around her. She would always stand on the corners where three streets met.
Source: http://italiannotes.com