That’s a good idea. The only issue is when a museum visitor scans the code, what will they see? A random string of numbers doesn’t tell them if the code is for “Vienna”, or “Salzburg” – so they won’t know what they are getting.
When they look at their QR scanner history later – they won’t be able to tell which is which.

I think it could be very useful when referring to long URLs like Donaudampfschiffahrtsgesellschaftskapitän!