The Ancient Kano City Walls, known in Hausa as Ganuwa, stand as a significant historical monument originally constructed to protect the ancient city of Kano. Initiated by Sarki Gijimasu in the early 12th century and completed in the mid-14th century under Zamnagawa's rule, these walls have been a defining feature of the region. They were further expanded during the 16th century to enhance their defensive capabilities.

The structure encompasses Dala Hill, Kurmi Market, and the Emir's Palace, forming an imposing barrier with an estimated original height ranging from 9.1 to 15.2 metres (30 to 50 feet) and a base thickness of approximately 12 metres (40 feet). The walls featured 15 gates for entry and exit.

Historically, General-Governor Fredrick Lugard praised the walls upon capturing Kano in 1903, noting their uniqueness across Africa. This recognition underscores the enduring significance of the Ancient Kano City Walls as a defensive marvel.