 As a former border march, it was located on the eastern periphery of the Empire, on the northern and southern shores of the Danube River, east of ("below") the Enns tributary.Drosendorf, Raabs, Laa and other fortifications along the Thaya River, north of the historic Waldviertel and Weinviertel regions and separated by the Manhartsberg range, marked the border with the Duchy of Bohemia (elevated to a Kingdom in 1198) and the Moravian lands, both of which were held by the Czech Přemyslid dynasty.In the east, the Imperial border with the Kingdom of Hungary (present-day Slovakia) had gradually shifted towards the plains of the Morava River and the eastern rim of the Vienna Basin.