This chapter critically investigates the dialectics between the concept of Europe’s common heritage and the Member States’ national heritages within the EU constitutional legal framework. The analysis is twofold. First, the chapter explores to what extent constitutional regulations of the EU Member States in relation to cultural heritage may be perceived as those truly forming EU constitutional principles, derived from common constitutional traditions of its members. Secondly, it analyses the evolving notion of cultural heritage within the EU primary law, constantly (re)interpreted in the EU policy documents in light of global developments in the field of cultural heritage governance. Accordingly, this chapter attempts to understand whether and to what extent the concept of Europe’s common cultural heritage, under EU law, goes beyond the sum of Member States’ heritages and their internal cultural policies and regulations which those states reciprocally protect and enforce through the EU legal instrumentarium and mechanisms. In other words, it discusses whether the EU constitutes just a platform to enhance, enforce and reconcile individual cultural heritage interests of its members, or perhaps it is already an organisation that has developed its own constitutional cultural heritage principles, common or collective in nature.