The Iron Age in temperate Europe is characterized by the emergence of hillforts. While such sites can be highly variable, they also share many characteristics, implying cultural linkages across a wide geographical area. Yet, the interpretation of hillforts has increasingly seen significant divergence in theoretical approaches in different European countries. In particular, Iron Age studies in Britain have progressively distanced themselves from those pursued in continental Europe. This article attempts to address this issue by analysing the evidence from two of the best-known hillforts in Europe: Danebury in Wessex, southern England, and the Heuneburg in Baden-Württemberg, south-western Germany. The article highlights a number of key similarities and differences in the occupational sequences of these sites. While the differences indicate that the hillforts are the creation of very different Iron Age societies, the synergies are argued to be a consequence of communities evincing similar responses to similar problems, particularly those resulting from the social tensions that develop when transforming previously dispersed rural societies into increasingly centralized forms.