The Weinviertel ("wine quarter") or Viertel unter dem Manhartsberg ("area below the Manhartsberg") is located in the northeast of Lower Austria. In the east, the Weinviertel borders Slovakia at the March River. In the south, it borders Mostviertel and Industrieviertel, its limits being the Wagram, the Danube and the Marchfeld. Its western neighbor is Waldviertel, the traditional border being the Manhartsberg. In the north, the Weinviertel is adjacent to the Czech Republic, more specifically Moravia. The river Thaya runs back and forth across the border.