Osterstein Castle, Medieval castle in Zwickau, Germany
Osterstein Castle is a fortress in Zwickau situated near the Zwickauer Mulde river, featuring Renaissance architecture with thick stone walls and a surrounding moat. The structure blends medieval defensive elements with later architectural additions, creating a robust form that stands out in the cityscape.
The site was first documented in 1292 as a medieval fortification and evolved over centuries. A major transformation occurred between 1587 and 1590 under Christian I, Elector of Saxony, who reshaped it into its present Renaissance form.
Martin Luther delivered sermons at the castle in 1522, marking its role in the Protestant Reformation movement across Saxony.
The building currently operates as a nursing home and is not open for general visits. You can view the exterior and surrounding areas from outside, while interior sections are reserved for exhibitions and occasional cultural events.
From 1775 to 1962, the castle served as a prison known for its security and harsh conditions. Notable prisoners included author Karl May and political activist Rosa Luxemburg, tying this place to significant historical moments that visitors often miss.
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