Under conditions of modernity, urban parks can be conceptualized as heterotopic social spaces (M. Foucault) within modern societies. Urban parks indeed symbolize an imaginary of nature for urban dwellers and are exposed to contesting secular and religious appropriations. Starting from empirical observations and conceptual reflections mostly within the framework of a study on ecological activism in two French-Speaking Swiss cities, this contribution focuses on religious practices taking place in urban parks. Whether the contexts in question are festivals, regular collective meetings, or even solitary actions, contemporary spirituality often takes place in urban parks. The chapter discusses the symbolic importance of such emplacements as well as the discourses accompanying the practices. In this regard, the way spirituality, society and nature are referred to, varies hugely and reflects broader developments of contemporary social change be it in terms of diversification and globalization as well as a longing for visible but non-surveilled niches