The second round of triumphal construction, commemorating the Battle of Poltava in 1709, resulted in seven gates being built in Moscow, notably the barbican gate on Bolshoy Kamenny Bridge. The third occasion, the Battle of Gangut of 1714, was celebrated in Saint Petersburg only. Finally, the Treaty of Nystadt was celebrated in both Saint Petersburg and Moscow. Peter's successors (Anna I of Russia, Elizabeth of Russia, Catherine II of Russia) had built various gates, but Red Gate in Moscow were the only ones that survived to 20th century.