Piter ans Paul's Fortress was founded on the May 27th 1703. According to the legend, Peter the Great has chosen this place for the new fortress by himself on the Hair Island. The island is situated in the estuaire of the Neva river. During the 1731 - 1858 period Peter and Paul's cathedral used to be the main eglise of the city and used to belong to the governmental departament. Later on the cathedral hsas become the Romanovs' (tsar dinasty) burial vault.