Sickelsjö Manor, Manor house in Arboga Municipality, Sweden

Sickelsjö Manor is a timber building with a rendered facade, built 1795–1802 for the Heijkenskjöld family. It measures 30 metres by 25 metres, with walls 7 metres high, two floors of 450 m² each, 18 rooms plus kitchen and cellar, and stands on the Ullhammar ridge. A round pavilion from 1903 occupies the courtyard in front.

The estate was built between 1795 and 1802 for Carl Fredrik Heijkenskjöld and has shaped the landscape since then. Its roof was originally covered with oak shingles before being replaced with metal and copper materials.

The manor sits within a landscape of service houses, cottages, and farm buildings that show how a large estate functioned as a community. These structures around the main building reflect the social hierarchy and daily life of the rural gentry.

The property remains largely forested and continues to support forestry and hunting operations. It is a private estate, so access may be limited and visitors should check conditions in advance.

The weather vane on the 1903 pavilion, marked HAN and 1603, was found among scrap in the cellar of the Rattenfängerhaus in Hameln and given to owner Axel Behm by two German friends, who joked that Sweden had taken no trophies in Germany for so long that a peaceful one was due. The whole story hangs on a board inside the pavilion.