Gutshaus Rumpshagen, Castle in Ankershagen, Germany.

Gutshaus Rumpshagen is a manor house in Ankershagen featuring four pilasters supporting a triangular pediment as its main architectural elements. Coats of arms adorn both the courtyard-facing side and the park-facing side of the building.

The present manor was built in 1768–70 for Jobst von Gundlach, who established an indivisible fideicommissum for Rumpshagen; the courtyard gable carries the von Gundlach coat of arms. Before that, a motte-and-bailey castle was mentioned in 1287, and the estate long belonged to the von Voss family of Flotow and Groß Gievitz. The von Gundlachs held it until 1945, when private landownership was banned.

The garden hall retains a Rococo stucco ceiling from the Voß era, while Günther von Gundlach and his wife Ida, née von Lücken, had parts of the interior refitted in Gründerzeit style after 1886. The house served as the social centre of the Gundlach family line Leizen-Rumpshagen: two granddaughters married here on 12 and 13 August 1864, Mathilde to the politician Rudolph von Cranach and Ina to Karl Freiherr von Stein zu Kochberg-Vietmannsdorf, a great-great-grandson of Charlotte von Stein.

The building underwent major restoration work in the 2000s and returned to private ownership following its previous use as municipal housing and administrative offices. The adjacent park provides good views of the exterior from different angles.

The exterior render is studded with crushed glass, a technique found nowhere else in northern Germany. It points to the three forest glassworks owned by the von Gundlach family, who had the house built in 1768–70 under Jobst von Gundlach.