The streets and sidewalks aren't accessible sometimes, from cracks and badly designed curb cuts, to cobblestone, and other historic excuses, having mobility issues in a historic city can be difficult. I live in Wilmington NC and downtown is historic but I've traveled to Boston, Philadelphia and DC but didn't experience as much inaccessibility as I do in my smaller city.
I live in rural PA. The biggest barrier seems to be establishments that simply aren't handicap accessible. These colonial era buildings are cramped to say the least, and the Hilly nature of the Poconos means that some businesses are up on stilts!
My solution to this is what we've seen from COVID. Outdoor seating. It may be a bit extra labor costs, but if the main building cannot be amended, please provide alternative measures.
A lot of businesses in Cville have steps to gain access into the establishment, or as others have said, you have to use a secondary entrance that is designated as the ADA entrance, which is either at the end of a circuitous route or at the rear of the building
The vast majority have restroom accessibility issues. But just getting in is also a huge issue here. Many places still have that one or twe step entrance. Most have difficult doors to open, especially when you are already precariously placed on a slope. Those two things are most prevalent, but there are also sidewalk issues and of course the ever present crap on the isle or on the sidewalk.
A lot of situations I see make it so there may be an accessible option but you have to go some crazy extra long route to get somewhere without using the stairs
Large amounts of stairs are always a problem for me.
Some places don't have a accessible public restroom.