Klosterplatz 4, Architectural heritage monument in central Cottbus, Germany.

The Kreisstockhaus at Klosterplatz 4 is a two-storey building of brick masonry and timber framing, built in 1826 as the criminal prison of Cottbus's patrimonial court. Its north wall is partly built into the historic town fortification, and its bricks match the rampart bricks in thickness. The ground floor has only two barred window slits; the left entrance leads to the upper floor, once the jailer's flat.

Built in 1826 as the criminal prison (Stockhaus) of the Cottbus patrimonial court, the building passed to the district of Cottbus after patrimonial jurisdiction was abolished in 1849. The city bought it in 1893. A conversion in 1996–97 removed the surviving prison fittings, including arrest cells and chain rings, and reconstructed the timber framing.

The building forms part of a restored architectural ensemble near Klosterkirche that shows typical construction methods of the region. You can see how 18th-century architecture has been combined with modern restoration approaches.

The location is central to Cottbus and easy to reach on foot, especially if you come from Oberkirche. Nearby parking is available, such as at Zimmerstraße or Neustädter Platz, if you prefer to arrive by car.

The north wall of the Kreisstockhaus is partly built into Cottbus's historic town fortifications, and its bricks are the same thickness as those of the old ramparts. Remains on the north side mark the gatekeeper's house added in 1835 and demolished in the 20th century.