This article re-examines the swimming pool as a potent building type embodying the salient characteristics of Modernity. Not only did the building of modern public swimming pools celebrate new materials, engineered solutions and technologies but they also reflected rapidly changing attitudes to the body, leisure and fitness in line with Modernist aspirations. Public pools thus created new communal places where relationships between social, natural and built environments could be explored and embraced.

In understanding these social and design aspirations to create the Modern ‘good life’, a set of English and Australian waterside open-air swimming pools and lidos of the 1930s – Scarborough (1915–1934), Tinside (1935), the Eastern Beach Reserve Geelong (1939) and the North Sydney pool (1936) – are described and compared in their past and present state. These seaside pools offered places for people to seek refuge within a setting which remains at once natural but also controlled and shaped, while also promoting the psychological and physiological benefits of open-air activities.

In re-appraising the fate of the public swimming pool today, the article concludes by highlighting two successful contemporary examples, the Badeschiff in Berlin (2009) and the Copenhagen Harbour Bath (2003). We argue that these new pools have grown out of precedents found in the early twentieth century but have reinvigorated the type by offering new interpretations of designing with nature, and providing facilities more relevant to current leisure and environmental trends. Their success lends support to the need for careful documentation and conservation of earlier surviving exemplars.