Fortress of Justinian or simply known as Tirana Castle is a castle in Tirana, Albania. Its history dates back before 1300 and is a remnant from the Byzantine-era. The fortress is the place where the main east–west and north–south roads crossed, and formed the heart of Tirana. The current fortification has three known towers and it is undergoing a process of restoration, for touristic purposes. Inside the fortified walls of the former fortress, there are many buildings that can be visited, including restaurants, hotels, and cultural institutions.