The memorial was inaugurated on 23 november 1981. the most important element is the building of Saint Nicholas Cathedral itself, which is at the same time the seat of Lezha Assembly on 2 march 1444 and the grave of our national hero George Kastriot Scanderbeg on 17 january 1468.
Important elements preserved today in this church are: Saint Nicolas original fresco, the church apse, the three windows and the original church door, the arch over the door and an original church decoration. This museum has also the outer sector, the archaeological environment with objects from Lezha ancient and medieval period, found around the museum.