Trastevere (across the Tiber), in ancient times, was the immigrant section on the westside of the Tiber, not part of the original City of the Seven Hills.  Displaying its antique charm built on a labyrinth of winding streets, today it is a beautiful, enchanting maze of surprises, with as many smells to delight the nose as sounds to thrill the ears and sights to captivate the eye.  It is particularly known for its nightlife, especially during the summer months, as well as its many excellent resturants and unique small shops.  Trastevere also hosts an English movie theater and an English bookstore.