1611 - Swedes build a fortress Nyenskans (Nyenschantz) at the mouth of the Neva river in Swedish Ingria (Ingermanland) on the site of the present day St. Petersburg (Nyen = Neva, skans = bastion). A small town called Nyen grows up around it.
1642 - Nyen is granted town privileges and becomes the administrative centre of Swedish Ingria
1656 - Russian attack badly damaged the town, and the administrative centre was moved to Narva
1682/05/07 - Peter I (Peter the Great) becomes tsar
1700 - The Great Northern War started when an alliance of Denmark–Norway, Saxony and Russia declared war on the Swedish Empire
1702 - Nyen was burned down in order not to become a threat to the fortress in the event of a Russian invasion.
1703/05/01 - the fortress of Nyenskans was taken by Peter the Great and renamed Schlotburg (Shlotburg, Sloteburg)
1703/05/12 - Peter the Great captured Nyenskans, and soon replaced the fortress
1703/05/27 - on Zayachy (Hare) Island, Peter the Great laid down the Peter and Paul Fortress, which became the first brick and stone building of the new city
1710 - Menshikov Palace founded. It was the first stone building in the city. Alexander Menshikov was Saint Petersburg Governor General. The city was built by conscripted peasants from all over Russia; a number of Swedish prisoners of war were also involved in some years under supervision of Alexander Menshikov
1710 - Summer Palace construction commenced
1712 - Peter moved the capital from Moscow to Saint Petersburg
1712 - Construction of Peter and Paul Cathedral started. It would be the first church in the city to be built of stone.
1714 - Summer Palace completed
1714 - Peter I began construction of the Monplaisir Palace in Peterhof
1715-16 - Anichkov Bridge being built. It is the first and most famous bridge across the Fontanka River. Nevsky Prospect today passes over it. Until the mid-18th century, the Fontanka River was considered the southern boundary of St. Petersburg.
1716 - During its first few years, the city developed around Trinity Square on the right bank of the Neva, near the Peter and Paul Fortress but by this year Domenico Trezzini had elaborated a project whereby the city centre would be located on Vasilyevsky Island and shaped by a rectangular grid of canals. The project was not completed.
1716 - Peter the Great appointed Jean-Baptiste Alexandre Le Blond as the chief architect of Saint Petersburg.
1719 - Start of building of Kunstkamera - the first museum in Russia, established by Peter the Great.
1721//11/02 - Peter I (Peter the Great) becomes an imperator
1721 - Treaty of Nystad ends The Great Northern War
1721 - from; Peter and Paul fortress houses part of the city's garrison and also serves as a high security political jail; among the first inmates was Peter's own rebellious son Alexei
1725/02/08 - Peter the Great dies
1725/02/08 – 17 May 1727 - Yekaterina I Alekseyevna (the second wife of Peter I) rules
1727 - Menshikov with his family was exiled to Siberia and his property was confiscated
1727 - Kunstkamera completed.
1727/05/18 - Pyotr II Alekseyevich becomes a ruler
1729/05/02 - Yekaterina II (Yekaterina Alexeyevna, Yekaterina the Great) born
1730/01/30 - Pyotr II Alekseyevich dies
1730 - Anna Ioannovna (Anna Ivanovna Romanova) becomes a ruler
1731 - Cadet Corps were established and occupied Menshikov Palace and neighboring buildings
1740 - Peter and Paul Fortress building completed
1740/10/28 - Anna of Russia dies
28 October 1740 – 6 December 1741 - Ivan VI Antonovich rules.
1741 - Elizabeth of Russia (Elizaveta Petrovna; daughter of Peter the Great/Peter I) becomes a ruler
1745 - 1755 - Elizabeth adds wings to Grand Palace in Peterhof
1754 - Anichkov Palace finished. It was designed for the Empress Elizabeth of Russia (Elizaveta Petrovna).
1762/01/05 - Elizabeth of Russia dies.
5 January 1762 – 9 July 1762 - Peter III (Pyotr III Fyodorovich) rules.
1762/07/09 - Yekaterina the Great becomes a ruler
1782 - The Bronze Horseman statue (The equestrian statue of Peter the Great ) finished
1783 - The Imperial drama, opera and ballet troupe in Saint Petersburg was established
1796/11/17 - Yekaterina II dies
1796//11/17 - Paul I becomes ruler
1801/03/23 - Paul I dies
1801/03/23 - Alexander I (Aleksandr Pavlovich) becomes ruler
1812 - Napoleon's invasion of Russia
1825/12/01 - Alexander I died. Presumed heir was Alexander's brother Constantine who made his renunciation and Nicholai stepped forward to assume the throne.
1825 - Nicholai I Pavlovich Romanov becomes a ruler
1825/12/26 - Decembrist revolution took place in the Senate Square: army officers led about 3,000 soldiers in a protest against Nicholas I's assumption of the throne after his elder brother Constantine removed himself from the line of succession.
1825-1826 - Egyptian Bridge (over Fontanka) constructed.
1832 - Two ancient sphinxes brought from Egypt (via France) and placed at the quay at Universitetskaya Embankment which got name Quay with Sphinxes.
1833 - Pushkin writes poem "The Bronze Horseman"
1841-42 - Anichkov Bridge re-built.
1849–50 - The Horse Tamers - four famous horse sculptures erected on the Anichkov Bridge.
1855/03/02 - Nicholai I Pavlovich Romanov dies
1855/03/02 - Aleksandr II Nikolaevich becomes a ruler
1860 - Mariinsky Theatre opened.
1861 - serfdom (slavery) abolished in Russia
1868/05/18 – Nikolay II Romanov born
1881/03/13 - Aleksandr II Nikolaevich dies
1881/03/13 - Alexander III (Alexander Alexandrovich Romanov) becomes a ruler
1894/11/01 - Alexander III dies
1894/11/01 - Nikolay II Romanov's rule starts. He would be the last Russian tsar.
early 20th century - Peter and Paul Fortress was still used as a prison by the tsarist government
1910 - Construction of The Saint Petersburg Mosque begins.
1913 - The Saint Petersburg Mosque opened. At that time it was the largest mosque in Europe outside Turkey.
1917/03/15 - Nikolay II Romanov forcibly abdicates.
1918/07/17 - Nikolay II Romanov
1921 - The Saint Petersburg Mosque completed. Is is patterned after Gur-e Amir, the tomb of Tamerlane in Samarkand
1938 - Museum of History and Development of Leningrad founded in Peter and Paul Fortress
1940 - The Saint Petersburg Mosque closed. Soviet authorities banned services and turned the building into a medical equipment storehouse. During the Second World War St. Petersburg Mosque was closed and was made into a warehouse.
1955 - Museum of Leningrad History founded
1956 - At the request of the first Indonesian President, Soekarno, ten days after his visit to the city, the mosque was returned to the Muslim Religious community of St. Petersburg. The Saint Petersburg Mosque reopened.
1956-1981 - the Menshikov Palace was restored again and finally opened to the public as a branch of the Hermitage Museum
1991 - Museum of Leningrad History renamed to The State Museum of the History of St. Petersburg