Haus Greiffenhorst, Heritage château in Linn district, Krefeld, Germany.

Haus Greiffenhorst is a three-story octagonal central block with four two-story square wings forming a cross plan, built 1838–1843. High windows framed by pilasters, horizontal cornices, and roof terraces linked by narrow balconies on corbels define the plastered facade. The central block rises like a tower belvedere, its viewing platform ringed by a wrought-iron balustrade with iron vases at the corner posts.

Cornelius de Greiff inherited the Linner Mühlenhof and Hausenhof estates in 1826 and had Haus Greiffenhorst built between 1838 and 1843, probably to plans by Otto von Gloeden, with L. Jürges supervising on site. The building cost around 20,000 thalers, yet de Greiff soon lost interest and held his post-hunt banquets at the nearby Hausenhof instead. The city of Krefeld acquired it in 1924 and converted it into a café in 1929.

The building now serves as a venue for exhibitions, concerts, and readings, blending its original purpose with contemporary cultural programming. Visitors experience an active cultural center deeply rooted in the local community and regularly drawing people together.

The property sits about 1.2 kilometers from Burg Linn and can be visited as part of an exploration of the historic district. The rooms are arranged for events and can be viewed depending on what is taking place.

The upper floors housed the gardener for a long period, and the building was probably never fully furnished: de Greiff preferred holding his post-hunt banquets at the nearby Hausenhof. A British air raid's landmine, detonating 500 metres away, broke only the windows.