At the heart of the city of Erbil, in the Kurdistan Region of Iraq, lies an ancient mound of earth some 25 to 30 meters tall from the surrounding plains. On top of this mound lies one of the oldest town in the world. Known as the Citadel of Erbil, this fortified town, measuring a meager 430 by 340 meters and occupying 102,000 square meters in area has been in continuous occupation since at least the 5th millennium BC, and possibly earlier. The imposing yellow-ochre color structure with a solid perimeter wall is one of the most dramatic visual experiences in the Middle East.
The mound rises at an angle of 45 degrees until it reaches the perimeter wall which consist of the facades of approximately 100 houses that have been built against each other. The houses are contiguous and form a solid wall very similar to fortified citadels of medieval times. Three ramps, located on the northern, eastern and southern slopes of the mound, lead up to gates in the outer ring of houses. Originally, there was only one ramp – the southern slope that led to a huge and arched gateway. The gate led to a small open square which, in turn, led to four main alleyways which branched out in all directions like a tree.