The city was known as Reval from the 13th century until the 1920s. http://en.wikipedia.org/wiki/Tallinn Old Tallinn The Old Town can historically be divided into two distinct areas: Toompea Hill and the Lower Old Town, which were separated by a dividing wall since medieval times. The elevated area of Toompea Hill with its castle was occupied by the residences of Tallinn's rulers and gentry. The Lower Old Town meanwhile developed as an autonomous merchantile centre, flourishing during the 13th-16th centuries, when the city enjoyed membership of the powerful Hanseatic Trading League. Generally speaking these two districts are now collectively referred as the Old Town. The Town wall and towers Medieval fortresses, which emerged during the development of the medieval town at the end of the 13th century, surrounded the city centre as a closed defence zone. By the 16th century, Tallinn's defence system was one of the most powerful in Northern Europe.
2 Towns (Upper & Lower Town) Tallinn used to be divided into 2 parts - Upper Town where lived the aristocracy, gentry and the clergy; and Lower Town with traders, craftsmen and merchants. Legend says the Toompea Hill is actually the tumulus mound of the great Kalev. Linda carried rocks to his grave. It is a naturally- formed limestone hill. Lower Town was a merchantile centre, Tallinn also belonged to the Hansaetic League (1285). It is often referred to as the town of citizens. Any grown-up, married and economically independent person, born in a legal marriage between two free people and having lived in the town for at least 3 months, could apply to the Magistracy for citizenship. Serfs could escape from serdom after having successfully hidden in town for a year and a day. Two parts remained separated until the end of the 19th century. Four Names
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