The Castle can be visited
Ritzebüttel Castle
Ritzebüttel Castle in Cuxhaven is a historical building on the German North Sea coast. Originally a medieval fortress, it served for centuries as the residence of Hamburg's bailiffs and is now one of the oldest surviving secular buildings of North German Brick Gothic in the region. Its history is closely linked to the control of the Lower Elbe and maritime trade.
History+
The origins of Ritzebüttel Castle date back to 1340, when a castle was built here for the feudal lords of Saxe-Lauenburg. Following disputes and a siege by the Hanseatic city of Hamburg in 1393, the complex came into Hamburg's possession in 1394. For the city, Ritzebüttel was strategically important, as it allowed control over the Lower Elbe, offered a winter harbor, and served as a base in the fight against pirates.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Jörg Heldt
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 53.8571, 8.6984