Jerusalem's Cardo aka Cardo Maximus

Aquí te lo cuentan todo. Yo te dejo un asomo: A 6th c. church floor in Medeba, Jordan has a mosaic map of the land of Israel with numerous place names in Greek.  

The center of the map is an open-faced depiction of Jerusalem with the city walls, gates, churches (with red roofs), and the Cardo.  This main street of the city is depicted with two rows of colonnades running the length of the city from north to south.