Really? Then what are those triangles on the side doing? Those don't look lit to me.
They are visible in person, and are lit. That whole area is very very difficult to photograph. You can only really do it via a long exposure. The photographer was lucky in that there was an Estop allowing the shot. The long exposure though made things look brighter than they are. The triangles are VERY subtle. A lot of people will not even notice them.