I have been meaning to visit ~Flow, which I supose could be best described as a ‘happening’ or some such. It is a ‘flowmill’ which has a large paddle wheel powered by the movement of the water in the river (Tyne). I’m afraid I was singularly unimpressed by the thing itself and the lack of interest by the attendants. You will have to judge for yourself. Here is a link to their website http://www.flowmill.org/ However the problem was resolved when it was removed in September 2012.
However all was not wasted as I had a chance encounter with The Queen, some Olympic Rings and an opening of the Millennium Bridge.