Burg Dinslaken, Medieval castle in Dinslaken, Germany.

Burg Dinslaken is a fortified castle built on elevated ground in former marshland, strategically positioned where multiple rivers converge. The structure displays solid medieval military architecture with defensive features characteristic of its era.

The castle was founded in medieval times as a principal fortress of the Kleve territory with strategic importance in the region. It gradually transformed from a military stronghold into an administrative building during the early modern period.

The castle served as the seat of nobility and remains central to Dinslaken's identity today. Its current use as the administrative heart shows how a medieval stronghold has been woven into modern urban life.

The location sits in the town center and is easily accessible to visitors. Certain sections can be reached by those with limited mobility, though the building functions as the municipal administration center.

The round tower served as a prison in the 16th century: the alleged witch Ulant Dammartz was held there from 1516 to 1521, and the Anabaptist Jan Willemsen was locked up from 1574 to 1580 before his execution. The castle has been a listed monument since 4 April 1984.