Most of Arabia was sparsely populated, and its cities can be found concentrated to the north, toward the Jordan. The only major port is Aqaba, which can be found at the tip of a wide gulf from the Red Sea bearing the same name. There is some disagreement as to what was the capital of the province, with claims that Bostra, near the border of the province of Syria, as the sole capital and other claims that both Petra and Bostra served that purpose.