Trevi Fountain, Rome, Italy This celebrated fountain took about 30 years to build (from 1732 to 1762), and exquisitely depicts Neptune, the vengeful god of the sea. Urged on by local legend, visitors toss coins into the water in hopes of ensuring a return to Rome. Send us your photos of the Trevi Fountain. Once we have enough pictures (it takes about 300) we'll create a Photosynth.