Saul Ansbacher
Google
Cute, but cluttered, little fluorescent art shop, with a little museum in the basement. Recommend booking a time in advance, as not many people can fit. The art, some (much?) of it created by the women running the shop is interesting, and while not exactly my style I know some people who would love the colours and look of the pieces.
The museum below is just as big (or small) but less cluttered. The walls and cases are filled with all sorts of things that glow under black light. The guy who gives the tour is more than full of info all about the history, science, background, and all manner of knowledge of fluorescence! Seeing the art upstairs is cool, seeing the objects downstairs is super interesting, but really: you should be coming to listen to him and his stories and information. If you have any interest in this (and I didn't know I did before I went!) it's worth the price of admission to hear all the info. He's right, most people leave before he's done, but they're missing the best part: stories illuminated by black light.