Berlin To convert from right back to the capital of Germany, it was necessary to hold a vote in the Bundestag in June 1991 which decided to transfer the institutions from Bonn to Berlin. The transfer of the federal government and the Foreign Ministry took place in 1999.

After German reunification, many enthusiasts have launched the project to restore Prussia officially name the region comprises the states of Berlin and Brandenburg. In a referendum held in 1996, most of the inhabitants of Brandenburg and East Berlin were against the merger of the two states, while West Berlin did favor. Despite the setback, the initiative on the merger has continued and final completion is scheduled for 2009 after being subjected to a referendum again. However, it is certain that, if approved the merger, the new state resulting from it receives the name of Prussia, and is considering the possibility of just calling Berlin-Brandenburg.

Since the nineties, Berlin is going through a serious economic and financial crisis due, firstly, the consequences of reunification (which, among other things, doubled the number of staff who had to pay the Town Hall), and second, the collapse of a state bank incorporated in 2001.This latest scandal led to a change of the regional government and the replacement of the conservative Eberhard Diepgen Klaus Wowereit by the social democrat, who was the first leader of his party to agree on a government in coalition with the Left Party (since 2007 renamed the Left ), heir to the Socialist Unity Party of Germany in the GDR. The management of this "government rojirrojo" has been marked by the continuing need to cut costs, in addition to an economic policy focused on increasing the attractiveness of Berlin through investment in culture, especially popular culture, "thus contributing to reputation for dynamism of the city.

On the other hand, the political importance of Berlin in the European Union was confirmed by the German Presidency of the EU in 2007, during which he wrote the "Berlin Declaration."