The Berlin Declaration has been signed in the German capital in a ceremony that included performances of classical music between speeches from the German Chancellor and the Presidents of the European Commission and European Parliament.
All 27 heads of government from the EU member nations attended the signing, reaffirming their commitment to reform the union’s institutions.
The declaration from the 27 came on the final day of celebrations to mark the 50th anniversary of the signing of Treaty of Rome – the document that founded the European Union.
The final act of the summit was for Chancellor Angela Merkel, Hans Gert Pottering and Jose Manuel Barroso to add their signatures.
After the ceremony the party headed to the Brandenburg Gate for a group photograph.
The location, often seen as a symbol of the unity of a once-divided nation, will this evening be the focus for wide-spread celebrations.
There will be an open air festival and a combination of music, culture and fireworks.
For those who want to dance the night away, the European Night Club will open its doors at 11pm.