The Kano City Walls are a historic fortification located in Kano, Nigeria. Built in the 14th century, these walls were designed to protect the city from invasions and to control trade routes. The walls stretch approximately 14 kilometers and are made of earth and mud, showcasing traditional construction techniques. The walls are a significant part of the Kano Emirate and reflect the city's rich history and culture. They are recognized as a UNESCO World Heritage Site, highlighting their importance in understanding the historical development of urban centers in West Africa.