Lower Saxony, German Niedersachsen, Land (state) of Germany. The country’s second largest state in size, Lower Saxony occupies an important band of territory across the northwestern part of the country. It is bordered by the North Sea and the German states of Schleswig-Holstein and Hamburg to the north and by the states of Mecklenburg–West Pomerania to the northeast, Saxony-Anhalt to the east, Thuringia and Hessen to the south, and North Rhine–Westphalia to the southwest. The Netherlands borders Lower Saxony to the west. The state of Bremen, formed by the cities of Bremerhaven (at the mouth of the Weser) and Bremen