Cities with very dense street counts

I’m currently in Venice. Got a bit of a surprise after going for a run this morning to see that I’d completed 82 streets in less than 4k (the most I’ve ever got on a run before, including plenty of much longer ones, is 34).

This made me wonder if there are any other cities which are similarly target-rich environments? I imagine Mediterranean old towns in general are likely prospects but how much so depends on local street naming conventions.