2naked - Die nackte Wand

By chance we discovered life-sized figures on the walls of various cities, such as Berlin:
Two completely unclothed people, who appear not to notice their audience, but communicate, as if by winking. They stand still and innocent, with their bodies on display. They look up to the left, as if looking at something... and then you see it. You follow their gaze, trying to find what they have found. Where are they looking, and what do want to tell me?