Magic Eco sound at Piazza del Popolo wall
Less well known is the wall of the People’s Square. Is every inhabitant or tourist definitely found, but never tried one with a person on the other side of the wall? Yes, this is possible thanks to its shape. The echo that is given by the concave shape of the wall Acoustic and not optical effect, but certainly to try: take advantage of the 100 meters of the wall or even the first 50, placing the fountain at the center of it, the other person making himself understood.
I almost forgot: the side on which it rests is the one in front of the Pincio.