Museum
Isenburg Castle

Isenburg Castle, a historic fortress, rises on a steep rock spur above the Ruhr loop in Hattingen. Originally built in the late 12th century, it stands today as a ruin and houses a museum.
History+
The construction of Isenburg Castle took place between 1193 and 1199 for Arnold von Altena. Strategically located on the Isenberg, it served as the administrative center of the County of Isenburg. The Romanesque complex was an unusually large fortification at the time of its construction, featuring an upper and lower castle that stretched across the mountain ridge. Within its walls were bloomery furnaces and workshops, indicating intensive iron smelting. In 1217, Arnold's son adopted the name Friedrich von Isenberg. After he killed his second cousin, Archbishop Engelbert I of Cologne, in 1225, the castle was besieged and destroyed. Friedrich von Isenberg was executed in 1226.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://www.zeche.org/
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Location: 51.3877, 7.1522