oh god, its Montreux!!! this is like 3 minutes walking from where I live! Took this boat a few times to go to France, which is right across the lake. Btw, the name of the lake is Leman I think, not Thun..
pkka, many thanks for your input. It was quite a few years ago that I took this shot. I cannot remember taking to the water on lake Geneva/Leman so that is why I believed it to be the Thun because I regularly took photos and sailed that water.
I will amend the title later. Once again thanks for the update.