The first traces of human settlement found in Tallinn's city center by archeologists are about 5000 years old. The comb ceramic pottery found on the site dates to about 3000 BC and corded ware pottery c. 2500 BC.
In 1050 the first fortress was built on Tallinn Toompea.
As an important port for trade between Russia and Scandinavia, it became a target for the expansion of the Teutonic Knights and the Kingdom of Denmark during the period of Northern Crusades in the beginning of the 13th century when Christianity was forcibly imposed on the local population. Danish rule of Tallinn and Northern Estonia started in 1219.
In 1285 the city became the northernmost member of the Hanseatic League – a mercantile and military alliance of German-dominated cities in Northern Europe. The Danes sold Tallinn along with their other land possessions in northern Estonia to the Teutonic Knights in 1346. Medieval Tallinn enjoyed a strategic position at the crossroads of trade between Western and Northern Europe and Russia. The city, with a population of 8,000, was very well fortified with city walls and 66 defense towers.
A weather vane, the figure of an old warrior called Old Thomas, was put on top of the spire of the Tallinn Town Hall in 1530 that became the symbol for the city.
With the start of the Protestant Reformation the German influence became even stronger as the city was converted to Lutheranism. In 1561 Tallinn politically became a dominion of Sweden.
During the Great Northern War, plague stricken Tallinn along with Swedish Estonia and Livonia capitulated to Imperial Russia in 1710, but the local self-government institutions (Magistracy of Reval and Chivalry of Estonia) retained their cultural and economical autonomy within Imperial Russia as the Duchy of Estonia. The Magistracy of Reval was abolished in 1889. The 19th century brought industrialization of the city and the port kept its importance. During the last decades of the
