There is a long straight path in Rome that alongs the river Tevere, in english known as Tiber river, so the district take its name from this river as Lungotevere. This river is the third biggest one in Italy. In Lungotevere, both sides of river are suitable for walking or biking, also there are a lot entertainment venue opening through the evenings. If you don't want to being just close the river, you can strolling in the up side of the river road, that for both vehicles and pedestrians. The best part of these two road both of them wooded long as river. When you walk along this path Castel Sant'Angelo welcomed you.
Hope you have a good Sunday at least as mine.