This spectacular event, as it happens in the famous Stonehenge monument during the solstice, is similarly observed in major American cities with a squared urban fabric. When the sun lines up with the road and the sunset explodes. In this case it is Chicago, when the sun aligns with the streets from the east or west. Yellows and oranges contrast the cold and dark colors, creating an evocative scene with a strong impact. All people remain motionless and at the same time bewildered, as if they were contemplating a first alien contact.