Berg, Lower Austria, municipality in the district of Bruck an der Leitha; alt. 154 m, pop. 648, area 9.46 km2, main border crossing point between Austria and Slovakia, lying on the Bundesstraße 9 (through road to Bratislava). Agriculture and wine cultivation; customs office and branch offices of haulage agents at the border crossing; commerce (fruit and vegetables, chemical products); leisure centre. Until 1996 was part of the municipality of Wolfsthal-Berg. Parish church of St. Anna (1789). Ruins of Pottenburg Castle, documented 1240.