Nordsternhaus, Protected architectural monument in Schöneberg, Berlin, Germany.

The Nordsternhaus is an early 20th-century office building with a triangular floor plan and rounded corners, displaying clear horizontal divisions across its facade. Inside, two internal courtyards surround five stories of office space connected by a central staircase.

Constructed between 1913 and 1914 by architects Paul Mebes and Paul Emmerich, the building originally served as headquarters for the Nordstern insurance group. It was designed to accommodate about 900 employees and became a significant office structure of early 20th-century Berlin.

The building's name comes from the Nordstern insurance group, whose three companies occupied it. The rounded corner facade of Langensalza travertine faces a small forecourt, unofficially and officially signposted as Nordsternplatz. The entrance area is a working government building, so the interior is not open to visitors; the travertine cladding, window forms and bas-relief cornices can be seen from the street.

The building stands at Badensche Straße 2, on the corner of Salzburger Straße, directly opposite Schöneberg Town Hall. The rounded facade forms a small forecourt signposted as Nordsternplatz. The justice administration occupies the building, so visitors see the exterior, the forecourt and the entrance hall from the public street.

The building once featured an advanced pneumatic tube system that could transport documents weighing up to 2 kilograms between offices throughout the structure. This technical innovation was a sign of modern administrative comfort and efficiency in that era.