Ancient cities used to be a maze of narrow alleys with just a few major arteries going through them. A city 1,5 km in diameter built in this way is still quite

Ancient cities used to be a maze of narrow alleys with just a few major arteries going through them. A city 1,5 km in diameter built in this way is still quite confusing. Also, Athens (Piraeus) was a major port and therefore had to have a nontrivial share of strangers roaming the streets.