The old city, or medina, of any Moroccan city is surrounded by walls. You can access the medina through one of various gates or "babs". It was about three days before I understood what our guide Najib was saying. He kept talking about "Bob" which I finally realized was gate. The top two photographs were taken in Fes of the same gate which is a different color depending on whether one is entering (top) the medina, or exiting (number 2). Blue coming in, green going out. Number three is in Meknes, and the bottom gate is in the beautiful coastal city of Essaouira down by the fishing port.