I visited #Barcelona a few days, and was amazed at how wheelchair accessible the century-old metro system was. It was a great exprrience and it just proves that making stuff accessible is just a matter of political priorities, including in cities like Paris where, yes, I know, the metro was built long before anyone cared about access and there are urbanistic challenges.
I feel it even radicalized my nondisabled parisian mother who realized how easy it could be when there is a political will.