Amt Neuhaus is a municipality in the District of Lüneburg, in Lower Saxony, Germany. Amt means "municipal office" in German. The original "municipal office of Neuhaus" existed since at least the 17th century until 1885, consecutively as part of Saxe-Lauenburg, Electorate of Hanover, Kingdom of Hanover, and the Prussian Province of Hanover.
In 1885, Prussia dissolved the municipality of Neuhaus, while the area remained part of the Province of Hanover. However, in 1945 the area of the former municipality was annexed to Mecklenburg and thus became a part of the Soviet Occupation Zone due to lying on the right bank of the Elbe River, and thus along with the former County of Blankenburg and the municipality of Calvörde became one of a few small areas of the Province of Hanover that were part of East Germany from 1949 to 1990.
Wikipedia https://en.wikipedia.org/wiki/Amt_Neuhaus
Coordinates 53°19'5.948" N 10°57'23.535" E