There is an elevator to the top of the Arc de Triomphe but for the adventurous there are spiral stairs to the base. There is very little light in the stairwell and so I needed to use a high iso and slow shutter speed to get this photo.
One last thing: Does art imitate nature here? Check out this photo (click)
Canon 5D 1/30s f/1.2 ISO1250 50mm