Built in 15 Century AD. 17.5 km in circumference with 16 gates, protecting what used to be an important centre of trade towards the north across the Sahara. Within the walls, the Gidan Makam Museum is a national monument of architectural excellence. Kano has probably a longer and more fully traceable history than any other of the cities in Nigeria and its name along with that of Timbuktu throughout the World.