Burg Schwalenberg, Medieval castle in Schieder-Schwalenberg, Germany.

Burg Schwalenberg stands on a hill above the town of Schwalenberg in the Lippe district. The counts of Schwalenberg built the hill castle between 1228 and 1231 under Count Volkwin III. Of the late-Renaissance palace erected in 1627/28, one wing remains, renewed between 1911 and 1913; the bergfried was demolished in 1618. The building now serves as a hotel with holiday apartments.

Count Volkwin III of Schwalenberg built the castle between 1228 and 1231, around the same time the town below was founded. From 1358 it was pledged to various noble families. In 1613 Hermann of Lippe inherited it and had the bergfried demolished in 1618; a late-Renaissance wing replaced the castle in 1627/28 and was renewed in 1911–1913.

The castle gave its name to the counts of Schwalenberg, who moved here from their older seat, later called Oldenburg, and founded the town below at the same time. A local tale tells of Count Volkwin offering two prisoners freedom and land to channel spring water to Schwalenberg; the Volkwinbrunnen fountain, made by Friedrich Eicke in the 1950s, recalls it, and the story helped the town join the German Fairy Tale Route.

Burg Schwalenberg sits on a hill above the town and can be reached on foot or by car from Schwalenberg. A multimedia trail along the castle hill and the town water route has steles where videos can be called up. Holiday flats are being built in the castle, and the castle café reopened in mid-January 2019.

The water story belongs not to the castle but to the town below: a spring near Schwalenberg lay only a few metres above it, and a channel about 2,200 metres long was traced around the castle hill from the Magdalenenquelle. The tale of Count Volkwin freeing prisoners to build it is recalled by the Volkwinbrunnen fountain, erected in the 1950s by Friedrich Eicke.