Schloss Nienburg

Schloss Nienburg stood on the Weser at the heart of the old town, its medieval water-burg built by the Bishops of Minden and later turned into a four-winged Renaissance palace by the Counts of Hoya. The castle formed part of the town’s defences, guarding roads and trade along the river. After the Counts died out in 1582 the site passed to the Welf dukes, who kept a steward there until the Thirty Years War. Cannon fire and sieges left only the Stockturm, a sixteenth-century battery tower that still rises above the square. The ruins were cleared in the early nineteenth century when the fortress was dismantled, leaving a broad parade ground called Schloßplatz. Military buildings from the 1730s—barracks, an armoury, a prison—lined its edges, while the old moat became a hollow in the paving. Beneath the modern car park and a department store lie the last traces of the palace cellars, uncovered by archaeologists in 2004. A reconstruction drawing shows how the four wings once enclosed a courtyard, and a small diorama in the town museum lets visitors picture the vanished halls. Today the Stockturm stands beside the Landratsamt and the former police academy, its thick walls recalling both prison cells and gun emplacements. The square itself is a quiet parking area, but the outlines of the moat and the long barracks front can still be read in the paving. From the tower’s viewing platform visitors look down on the Weser and the medieval street plan that once served the counts and bishops who ruled here for centuries.