Architecture has become an important discourse for new expressions of post-national identity in general and in particular for the emergence of a `spatial' European identity. No longer tied to the state to the same degree as in the period of nation-building, architecture has become a significant cultural expression of post-national identities within and beyond the nation-state. The article looks at four such discourses, first, taking the Millennium Dome in London and the Reichstag in Berlin, we show that architecture can express (...) in a reflexive way contested and ambiguous national identities; second, the case of architecture in post-communist European societies illustrates the dual identity of architecture as a project of building and of re-building; third, the EU's search for a cultural form is discussed with respect to the architectural designs on the Euro banknotes; and finally the question of architecture as a relation to a lived space is considered with regard to cityscapes as yet another expression of a tendentially spatialized European identity. (shrink)