Berlin ( GERMANY)
The population is about 4,000,000. Its origins date back to the 13th century. In the year 1920 it was divided into 20 administrative neighbourhoods.
From 1949 to 1989, 8 of these were in the eastern sector, belonging to the former German Democratic Republic, which had its Ministries, Embassies and the majority of the national institutions in this sector during that time.
Over the same four decades the western sector, which belonged to West Germany, saw considerable development. This was industrial and economic, above all, but it also absorbed large influxes of immigrants, especially from Turkey. At that time, the Kollektivplan urban planning works to rebuild West Berlin were coordinated by the architect Hans Scharoun, on the financial-political basis of the Marshall Plan.
After German reunification in 1989, the authorities revised the specific design policies for public spaces and buildings, both new and existing, ready for rehabilitation. From that moment, the new Parliament, Ministries, Embassies, and public and private Administrations were centralized in Berlin.
The unified city changed its look in only a few years, without renouncing the past, apart from some exceptions. In order to understand the whole Berlin urban process, it should be borne in mind that in the year 1939 the population was 4,300,000 and when World War Two ended in 1945, six years later, only 2,000,000 inhabitants were left and three quarters of the city had been destroyed.
Like others areas of Berlin, the Potsdamer Platz District designed by the architect Renzo Piano has a very good level of accessibility and operates throughout the day and night. The Sony Centre in the Potsdamer Platz, designed by the architect Helmut Jahn, has an amazing and original central square with wide pedestrian walkways, adapted traffic signals, comfortable pavements and generous public space
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