Alt-Berlin
Alt-Berlin ("Old Berlin"), also spelled Altberlin, is a neighbourhood (Stadtviertel), situated in the Berliner locality (Ortsteil) of Mitte, part of the homonymous borough. In the 13th century it was the sister town of the old Cölln, located on the northern Spree Island in the Margraviate of Brandenburg. It counts in its territory the zone of Nikolaiviertel.
History
First mentioned in 1244, 7 years after Cölln, it represents the original core of the modern Berlin. The first stone fortification was built, to defend both cities, in 1250 and in 1251 it gained the city rights. In 1280 Berlin, gained the right to mint currency. In that period it appeared on a coat of arms for the first time, close to the symbol of the imperial eagle, two stylized bears; antecedents of the actual rampant bear, symbol of the city. On March 20, 1307 the town was united with Cölln (maintaining its name, Berlin) forming a trading union on political and security matters, and participated in the Hanseatic League.