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Icons in a prayer room for catholics is seen in the museum of the Prison Castle in Tobolsk. Before the revolution of 1917, there were rooms for praying for different confessions in the block of cells #1. When the Soviets took control over the coutry, the prayer rooms were eliminated. The Prison Castle, a strict regime prison in Tobolsk, was built during 1838-1855. The architectural ensemble consisted of several cell blocks, a hospital for prisoners, an administrative building, and other premises. Through it's history, especially during the Soviets, the conditions in the prison were considered stricter than in colony.