My experience was that you can easily find ones that are highly walkable, but "no cars in the city whatsoever" only seems to exist for, like, tiny little towns

My experience was that you can easily find ones that are highly walkable, but "no cars in the city whatsoever" only seems to exist for, like, tiny little towns locked by mountains or on an island or something. Which I guess Venice is sort of like that, except that it's not all that tiny. That's what I like about it: it's a good-sized town/city that's super walkable and no cars whatsoever aside from the entrance area where the trains also come in IIRC. In Venice, you can walk from the train station to the park on the opposite end, it takes close to an hour, you'll not even see any cars during that time and it's all fairly dense and urban. If there are cities that you could say the same of, I'd love to know about them.