Hörder Burg, Castle complex in Hörde, Dortmund, Germany

Hörder Burg is a former water castle by the Emscher in Dortmund-Hörde. Its square tower, with a white facade, red trim and a steep grey roof flanked by two small red corner turrets, survives from the 12th century. A red sunburst emblem sits below three narrow red openings, and a black-roofed bay window projects from the lower facade. The adjoining red-and-white crow-stepped gable belongs to the 1920–1922 Historismus Vorburg, now part of the Sparkassenakademie NRW.

The Hörder Burg was built in the 12th century as a water castle near the Emscher and first appears in a charter of Emperor Otto IV for Corvey Abbey, naming ministerialis Albert I of Hörde; the castle tower survives from that time. In 1505 a fire destroyed all but the lords' residence and one other building. In 1840 the Iserlohn manufacturer Hermann Diedrich Piepenstock acquired the castle and set up a puddling and rolling works on the grounds, the Hermannshütte, which became the first joint-stock company in the Ruhr iron industry in 1852.

The name comes from the Hörde noble family, whose ministerialis Albert I appears in a charter of Emperor Otto IV. The castle was the seat of the Amt Hörde and of the Eichlinghofen court. Since January 2017 it has housed the Sparkassenakademie NRW, which won a selection process against 39 competitors.

The castle now houses the Sparkassenakademie NRW, which has occupied it since January 2017 after winning a selection process against 39 competitors. A hotel was built on the neighbouring plot. The medieval remains of the castle are protected as a Bodendenkmal, while the former Hoesch administration building is a listed monument.

The castle tower visible today dates from the time of its first mention in a charter of Emperor Otto IV for Corvey Abbey, when Albert I of Hörde is named as ministerialis. In 2000, restoration work exposed the old masonry of this tower. Since January 2017 the castle has housed the Sparkassenakademie NRW, chosen over 39 competing sites.