These are some pictures I took about a month ago, in Matlock Bath. I'd fogotten I had them. They're of a odd little thing they do as part of the illuminations there. The tradition dates back to Victoria's Golden Jubilee - rowing boats, swanning up and down the river with these big illuminated structures attached.
When you first get there (nice and early so you know you'll get a good view) the boats are just tied up, light-bulbs and structure all very visible and it looks like it's going to be very crap and disappointing. But then dusk falls properly and they head down the river and it becomes slightly magical. You can't see the oarsmen or anything. Just these bright, iconic representations seeming to float magically above the river.