Northwest section of the Dipylon Gate. In the background is the Pompeion. Kerameikos. Athens. Greece. Built in the 4th century BC, the Dipylon was a double gate and was well protected by its towers and thick ramparts. It was the main, largest and most used gate of the City with the road from the Agora to Plato’s Academy passing through it. Serving as a burial ground as long ago as the 12th century BC, Kerameikos located in the ancient neighbourhood of potters contains part of the ancient city walls and the Dipylon, the main gate of Ancient Athens at a junction of the Sacred Way and Panathenaic Way. It served as a burial ground for the richest and most distinguished citizens of the city.