Thanks to the very kind endeavours of Meg at Pigtown Design, I was able to get my copy shop to paste together 6 of the 25 images of the Michel Etienne Turgot C18th map of Paris, and this has now replaced the silk fabric with its multicoloured dragonflies, that used to be in the window panel of my guest loo.
The angle at which I have to take the photograph, (to avoid the wall of mirror that faces you as you enter the loo), means that my shot doesn't perhaps give you the impact that this new effect produces.
But I have to say, I'm very pleased with the result. And very grateful to Meg for her computer and Photoshop skills.
And now a river really does run through my loo. The Seine.