Salnecke Castle, Château in Enköping Municipality, Sweden

Salnecke Castle is a three-storey brick building with a steep roof and tall gables, standing just west of Gryta church near Örsundsbro. Its smooth-rendered facade has lily-shaped iron anchors, natural-stone corner quoins and a red sandstone portal bearing the coats of arms of builder Georg Grissbach and his wife. The original door, the grand fireplace and the ground-floor floor date from the 1640s.

Salnecke's first known owner, Karl Ingeborgasson Lejonbalk, exchanged his farm here to Sko Abbey in 1302. In 1626 Gustav II Adolf gave the estate to war councillor Philip Sadler, and after his death in 1641 it passed to Georg Grissbach, who began the present stone house around 1642; the year 1646 above the portal marks its completion. The Gyllenadler family held the castle until 2013, and it became a listed building in 1967.

The name Salnecke comes from the medieval estate that Karl Ingeborgasson Lejonbalk exchanged with Sko Abbey in 1302. A relative of a former owner started Sweden's first consumer cooperative in Örsundsbro in 1850, in a small red-timbered building by the bridge that now houses the Kappen trade museum. Above the red sandstone portal, the year 1646 is carved.

Salnecke Castle stands just west of Gryta Church in Gryta parish, a short distance from Örsundsbro in Enköping Municipality. The grounds lie in the flat farmland of Uppland, so the three-storey brick main building with its steep roof and high gables is visible from the surrounding fields. The red sandstone portal with the coats of arms of Georg Grissbach and his wife faces the entrance; the door itself is the original from the 1640s.

Above the red sandstone portal, the year 1646 marks the building's completion under Georg Grissbach. Inside hangs a portrait of Peter Forsskål (1732–1763), a pupil of Linnaeus who died in Yemen; the painting served as the model for a Finnish postage stamp.