Germany
Tonna Castle, also known as Kettenburg, is a medieval moated castle in Gräfentonna, a district of Tonna in the district of Gotha in Thuringia. The building complex was rebuilt and enlarged several times and served for a period of 130 years, until 1989, as a prison. Together with its outer bailey, it is entered as an individual monument in the list of cultural monuments of the district of Gotha and is thus subject to the provisions of the Thuringian Monument Protection Act.
Machine-translated from “Burg Tonna” on the German Wikipedia, CC BY-SA 4.0.
Schloss Tonna ranks #7,762 of 9,079 worldwide in the atlas's castle fame ranking, and #685 of the 711 mapped in Germany. 4 more atlas landmarks stand within 25 km. See how Germany compares in the castle statistics.
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