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St. Isaac’s Cathedral – a unique monument of Russian architecture and one of the most beautiful cathedrals in Europe Its history dates back to 1710 when the Admiralty in the shed, a temporary wooden church was constructed.. The cathedral was consecrated in the name of St. Isaac of Dalmatia, the revered St. Peter I, as emperor was born in his Memorial Day – May 30 to the Julian calendar Built in 1818-1858 years by the architect Auguste de Montferrand;. oversaw the...