I could imagine that the main factor influencing how "wander and explore"-friendly a city is, might not be age or evolved-vs-planned, but rather whether it is c

I could imagine that the main factor influencing how "wander and explore"-friendly a city is, might not be age or evolved-vs-planned, but rather whether it is car-friendly or not (i.e. the degree of density). Car-friendliness can be by design or might evolve.