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                                                                                                  Krechetov Fedor Vasilievich
                                                      
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                                                        Alexeevsky Ravelin 
                                                                           
                         
                        ALEXEEVSKY RAVELIN, an outer fortification of Peter and Paul fortress, situated in its western part, before Vasilievskaya curtain wall. The ravelin was named so in honour of Tsar Alexey Mikhaylovich. It was built in 1733-40 (engineer C.A. Munnich, C
                                             
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                                                        Shlisselburg Fortress. 
                                                                           
                         
                        SHLISSELBURG FORTRESS (until 1612, named Oreshek, until 1702, Noteborg), an old Russian fortress on Orekhovy Island, at the Neva's headwaters on Lake Ladoga. It was founded by Novgorod residents in 1323
                                             
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                                                        St. Peter and Paul fortress 
                                                                           
                         
                        ST. PETER AND PAUL FORTRESS, the historical centre of St. Petersburg, a monument of military engineering, the oldest engineering and architectural sight of the city
                                             
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