This special section builds on previous scholarship on geographies of ageing, and on relational and transnational approaches to age and migration, to assert the significance of the ageing-migration nexus in human geography. Our primary goal is to examine the intricate relationships between ageing, migration, space and place. By bringing empirical research on ageing and migration into dialogue with existing conceptual work within Geography, we also aim to critically contribute to current debates in both areas. The contributors explore a wide range of migration processes and experiences through an intersectional lens, and demonstrate the importance of a diverse set of epistemological and methodological approaches to explore the spatialities of the ageing-migration nexus. Key dimensions examined include, but are not limited to, the spaces and places of ageing and migration, the multi-scalar nature of the geographies of the ageing-migration nexus, their (im)mobilities, fluid boundaries, and emotional geographies.ageing, geography, intersectionality, migration, place, spaceThe intersections between ageing and migration have profound geographic resonance. In this special section, we seek to illuminate emplaced meanings of age and ageing, and related (im)mobilities, produced over space and time, demonstrating that place is more than a mere "container" of older people (Andrews et al., 2007;Pain et al., 2000). Existing research allows us to map out these crossings in three substantive areas of concern, relevant for both academic work and policymaking: the increasing diversity of ageing migrants in all parts of the globe, both internally and across borders, and related social, cultural, economic, health and welfare-specific challenges; the multiplicity of ageing landscapes and the nuanced nature of migrants' home-unmaking practices, social and intimate relationships in later life, ageing cultures and ageing care; and the interstitial dimensions and individual subjectivities that mould prescribed experiences of age and ageing, and their varied entitlements across the world.We argue that it is by looking at the spaces and places of our everyday lives, both relationally and transnationally, that the ageing experience as an ongoing, (im)mobile, social project can be further understood. Pertinent questions that this special section addresses include the following. What are the implications of (trans)national migration for ageing as both an embodied and emplaced experience? How does geographical mobility impact migrants' wellbeing in later life? Do older migrants' ideas about age and ageing shift across space and time? How is ageing care articulated across borders and what are the consequent challenges for migrants and non-migrants? In what ways are later-life identities and home-making experiences shaped at different social and spatial scales? How is privilege, accumulated over the life course, enacted in new geographical contexts? And, how are migrants' social and intimate relationships shaped by their (im)mobilities and empla...