Dahlwitz manor, Manor estate in Dahlwitz-Hoppegarten, Germany

Dahlwitz manor is a late-classical country house built 1855–1856 by Berlin architect Friedrich Hitzig for Carl Heinrich von Treskow. The plastered facade, red since its 2007 restoration, carries exterior stucco again, and the tower was raised in the second half of the 19th century. An annex with a hall used as a studio and a kitchen was added on the north side.

The von Treskow family replaced an earlier Marschal manor with a new building designed by Berlin architect Friedrich Hitzig, erected 1855–1856 for Carl Heinrich von Treskow and Marianne von Knoblauch-Pessin II. The tower was raised later in the 19th century. After 1947 expropriation it became a kindergarten, losing facade ornament and interior doors; it served as kindergarten and school after 1990 until 1997. Brandenburgische Schlösser GmbH restored it from 2004, and a private owner took over after a 2019 bidding process.

The estate is called Dahlwitz after the village and the old knight's manor of the von Treskow family, ennobled in 1797. Since 2019 the privately owned building has housed flats and a room for small events, and every summer the Dahlwitzer Schlossfest is held here.

The building is privately owned since 2019 and now holds flats and a room for small events, so it is not open as a museum; view the red facade and restored exterior stucco from the street. The Dahlwitz Schlossfest is held here each summer. The 1821 Lenné landscape garden lies by the estate.

The original owner Carl Heinrich von Treskow-Friedrichsfelde founded the nearby Hoppegarten racecourse and thereby shaped regional development profoundly. The direct connection between the manor and the racing grounds still shows today the economic interests of 19th-century landowners.