"New Boundaries. Public space toward a sustainable urban environment" proposes an interdisciplinary and international dialogue on the theme of sustainable and resilient public space, with particular reference to the border spaces of urban waterfronts, as part of a comparison of research and design practices developed by the European universities involved in the framework of the New European Bauhaus. The theme of the boundary, takes on a scientific and technical dimension but also a philosophical and artistic one, as an area of research and design experimentation connected to the topic of public space and the space of water. The experimentation concerns urban interventions developed at different scales, from design to architecture and urban planning, with the aim of promoting sustainable lifestyles and behaviours resilient to environmental and social changes in relation to emergency and long-term health and environmental risks.