Sort of. The EU ratified the UN's officiously-titled Convention on the Rights of Persons with Disabilities in 2010, but actual disability access comes down to local laws. Only some EU members implement the standards, and they usually apply only to new buildings. In practice, disability access in Europe is terrible:
https://www.washingtonpost.com/lifestyle/travel/traveling-wi...
I'm not disabled, but even my cursory observation noticed how bad it is. There are millions of wide gaps, high curbs, and narrow staircases with no other accessibility options. Last time I visited the British Museum, several of the few lifts they did have were broken with no workaround. And that's one of the more accessible places. Problems with roundabouts barely even make the list.