Trevi Fountain, Rome. Whether because of the movie or not, a great number of coins get dropped into the Trevi Fountain every day by people hoping to return. I've done it twice now.
Yay! Another Trevi lover, I just uploaded my first pic and it was of the Trevi. St Peter's Basilica was sensational, but this had the most charm of anything Rome had to offer. I highly recommend a trip there to anyone, its awesome. I wish my pic had as good colour as yours, I had to correct them all because they came out blue!