[vintagedave]

If you're on the other side of the pond, I recommend Warsaw's Neon Museum: https://www.neonmuzeum.org/english

It focuses on Cold War era (gently phrased, ie the Soviet occupation) neon signage, and they're rescued a huge number of small to gigantic signs that made up Poland's visual landscape.

But I most appreciate trying to keep a record, a visual interactive record, of something present in cities that I hadn't even realised was silently vanishing. My favorite coffee mug is from that museum with a picture of the Kino Kosmos logo -- more locally, the Kosmos cinema in Tallinn closed recently and I feel its loss too.