Before we went on holiday I had spotted a place called the Neon Museum. They run a couple of events each month where you can go in, as a photographer and have an hour of photographing their collection of signs without a lot of their usual restrictions (no tripods, no extra lenses etc.)
It is a fascinating place, with some amazing signs from the history of Las Vegas, and Americana in general. These signs are a unique reflection on America, and the ones they have restored, and the ones they have in their state of disrepair are all excellent to see and so photogenic.
I have added a number of extras from the museum too. Do please have a look.