Gut Grevenburg, Architectural heritage monument in Nieheim, Germany.

Gut Grevenburg is a manor house with farm buildings in Nieheim, consisting of several stone structures. The estate shows typical features of a rural aristocratic seat with a main dwelling and associated outbuildings.

The Oeynhausen noble family acquired the site and built a Vorwerk there in 1536; the estate takes its name from the Greve stream. Between 1566 and 1579 their descendants erected the small Renaissance manor house as the family seat, originally ringed by a moat about 18 m wide inside a high, thick rampart. Around 1850 the moat was partly filled and ponds laid out; the park was remodelled again around 1950. The property remains in family hands today.

The estate belonged to a single family for generations and still shapes how locals see their village. The buildings show how rural nobility lived and managed their lands in this region.

The estate is located in the countryside and is best reached by car or bicycle. Check ahead about visiting possibilities, as it is a private monument and not always open to the public.

Karl von Oeynhausen, born at Grevenburg in 1795, became a Prussian mining official; the spa town of Bad Oeynhausen is named after him. Between 1930 and 1936 Adolf Hitler stayed at the estate fifteen times as a guest of Adolf von Oeynhausen, who joined the NSDAP in 1931 and was appointed Regierungspräsident of Minden on 25 March 1933.