Both of these aspects are important for assessing the role of the euro in the world. Use of the euro by the international financial markets will be strengthened by further progress towards an integrated European financial market.
The size of the site – and of the building to come – has been chosen in view to possible extensions of the Eurosystem and the European Union, the former today encompassing  BIS Review 69/2010  1  16 countries and around 330 million citizens, so as to be able to fit all ECB staff in the new premises on the site.