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In page Tønsberg:

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During the German occupation of Norway in World War II, the Berg concentration camp was constructed near Tønsberg. In 1948, Tønsberg became the cathedral city of the Diocese of Tunsberg (Norwegian: Tunsberg bispedømme), based at the Tønsberg Cathedral. The diocese was created when the counties of Buskerud and Vestfold were separated from the Diocese of Oslo.[citation needed]