Borj Nord, also known as Al-Burj ash-Shamali, is a historic fort located in Fes, Morocco. It was originally built in 1582 AD by the Saadi Sultan Ahmad al-Mansur. The fort was designed in the same way as the Portuguese forts and was expanded later during the Alaouite period. Today, the fort houses the Museum of Arms and it was inscribed as a UNESCO World Heritage Site in 1981 as part of Medina of Fez.