Herrenhaus Hoyerswort, Renaissance manor house in Oldenswort, Germany

Herrenhaus Hoyerswort is a two-story brick Renaissance manor with an L-shaped plan, a stair tower, steep roofs and ridge chimneys, surrounded by a double moat. Its white rendering dates from the Baroque period. A heart-shaped wall anchor marked "C H 1564" sits above an upper-floor window of the portal axis.

Caspar Hoyer, advisor to Duke Adolf of Schleswig-Holstein-Gottorf, received 200 hectares and the building plot in 1564 and began the manor; a heart-shaped wall anchor marked "C H 1564" recalls this. The year 1594 above the sandstone portal marks completion in Hoyer's death year. In 1713 King Frederick IV of Denmark received the Swedish capitulation at Hoyerswort. The Haubarg was moved next to the manor in 1779.

The house is tied to Anna Ovena Hoyer, who moved here after her husband Hermann's death in 1622. She sheltered the lay theologian Nicolaus Knutzen Teting from 1623 and gathered a congregation of Anabaptists in the great hall, since she refused to attend the Oldenswort church for which her father-in-law had donated the altar. Local pastors denounced the group as heretical, but the authorities did not intervene.

The manor lies about 1.5 km south of Oldenswort's church, surrounded by a double moat; the approach is on foot from the village. Ceramist Alfred Jordy opened the estate to the public in 2011, with a café, ceramics workshop and holiday flats funding its upkeep. The adjoining Haubarg now holds a restaurant and exhibition room, and a sculpture park with works from Pierre Schumann's estate stands in front of the house.

The first works in the sculpture park in front of the manor come from the estate of sculptor Pierre Schumann, set up by Alfred Jordy together with the Förderverein Herrenhaus Hoyerswort. The Haubarg that once stood by the house was moved here in 1779 from Langenhemme on the orders of Boye Hamkens.