Strategic spatial planning which takes an integrated approach to the development of a territory seemed to go out of fashion, but now there are signs that it is being re‐established. This paper explores these developments using case studies from 10 European countries. The analysis uses an ‘institutionalist’ approach, which examines how the ‘agency’ of spatial planning practices responds to the ‘structure’ of contextual forces, at the same time influencing that structure. The ‘driving forces’ which are influencing strategic spatial planning are investigated, as are two aspects of the changes in spatial planning: institutional relations and policy agendas. The conclusions are that—at least in the case studies—there is a movement in the institutional relations towards horizontal articulation, territorial logic, and negotiative forms. Policy agendas too are changing, becoming more selective and using new conceptions of space and place. Those institutional developments, however, are not necessarily being translated into territorially‐integrated policy (as distinct from functional/sectoral policy). That translation appears to require simultaneous re‐framing of relational resources (trust, social capital), knowledge resources (intellectual capital), linked to strong mobilization efforts (political capital). The cases considered varied significantly in how far that had been done. Where it had, strategic spatial plan‐making practices were playing a key role in developing institutional territorial integration and re‐invigorating territorial identities.