Germans will amass in Berlin on Sunday to celebrate the 25th year anniversary of the most momentous event in recent German history: The fall of the Berlin Wall. Among other tributes, illuminated balloons set along the path of the wall that stood for 28 years will be released to the strains of Beethoven's Ninth Symphony.

CNBC looks at how Germany's economy and its role in Europe have changed since West and East reunified a quarter of a century ago, in a day that has come to represent the triumph of democracy and freedom over communism.