I wonder if they make tourist go down the Eiffel Tower if there's a lightning storm approaching to Paris. After looking at this lightning engulfing its metal structure, I know I'd instantly get the hell out of there.
If you enlarge the image, it looks like the electrical beam is getting in and out the metal structure of the tower. The image was taken by amateur photographer Bertrand Kulik during a lightning storm in July 2010. It will appear in an exhibition called Celestial Lights, Human Lights in Issy L'eveque, Burgundy. [BBC]