Started this (our final day in Paris with a trip to the Palais Garnier, the Paris Opera house which is a truly magnificent theatre. I'd have shared some of the grandeur but sadly the camera was lifted from me, I suspect while I was buying lunch. The "Beware of Pickpockets" signs should be believed.
Much retracing of steps to see if the camera had been hung on the fence by some kind person (it wasn't). Luckily it's only this mornings photos that are lost. Why don't cameras lock like phones?
Anyway we chucked in the fruitless search and went for our afternoon booking at City Segway Tours which was just excellent. This is highly recommended and you should do it first.