Waterfront areas in cities are subject to constant changes. The desire to integrate the transformed waterside areas with the urban fabric involves shaping high-quality public spaces related to water, which are often referred to as urban blue spaces (UBS). The aim of the research was to examine the transformation processes of urban waterfront areas in the Baltic Sea Region and identify emerging transition models and types of blue public spaces. The methodological framework of this study is based on qualitative analysis of urban form with respect to coastal and riverine waters. An introductory analysis of 50 cases of transformations was conducted, and 12 were selected for further investigation: Tallinn, Pärnu (Estonia), Copenhagen, Køge, Aarhus (Denmark), Helsinki, Turku (Finland), Stockholm, Malmö, Luleå, Sundsvall, and Ystad (Sweden). As the outcome of the study, the authors indicate that the existing hard land–water interfaces were transformed into soft transition zones where new types of blue public spaces were created with different relationships to water. Synergies were identified between public space design, flood protection measures, and climate adaptation schemes. Finally, the findings highlight the need to verify the existing planning regulations and make them more flexible and effective in guiding the sustainable waterfront design processes.

In the contemporary urban landscape, walkability is shaped by the spatial characteristics of the built environment and its ability to adapt to environmental risks, particularly those posed by climate change. This study explores the intersection of walkability and flood adaptation strategies in waterfront public spaces across nine cities in the Baltic Sea Region, analysing their morphological characteristics with a focus on connectivity, accessibility, and climate adaptability. Using a mixed‐method approach that integrates spatial mapping, quantitative metrics, qualitative analysis, and comparative case studies, this research evaluates the effectiveness of urban structure transformations and the introduction of blue‐green infrastructure, floating structures, and nature‐based solutions in enhancing walkability while mitigating flood risks. The findings reveal significant improvements in connectivity, as indicated by extended pedestrian route networks (increases of 6%–28%), enhanced link–node ratios (increases of 24%–39%), and a substantial rise in the number of urban nodes with direct water access (150%–1900%). These results demonstrate that climate‐adaptive urban design not only strengthens flood resilience but also fosters vibrant, walkable, and socially inclusive public spaces. This study provides valuable insights for urban planners, architects, and policymakers, proposing strategies to integrate flood resilience into walkable urban environments. By emphasising the synergy between walkability and climate adaptation, this research advances the discourse on sustainable urban planning. The findings highlight the potential of adaptable waterfronts, incorporating blue‐green infrastructure and flexible design principles, to enhance urban resilience while maintaining public space quality and accessibility.

Waterfront built environments are increasingly exposed to hydrological variability and climate-related pressures that challenge conventional land-based building typologies. This systematic review examines permanently buoyant floating systems and flood-responsive amphibious systems as water-adaptive approaches to climate adaptation and regenerative waterfront development. Peer-reviewed studies indexed in Scopus and Web of Science were reviewed for January 2015–August 2025, with searches last updated on 15 August 2025. The review combines PRISMA-guided selection, bibliometric mapping of the screened publication landscape (N = 1410), and qualitative synthesis of the core evidence base (N = 63). Regenerative potential is operationalised as credible only where supported by explicit ecological, socio-spatial, governance-related, or performance-oriented evidence, including life-cycle assessment, post-occupancy evidence, ecological monitoring, habitat enhancement, blue-green infrastructure integration, or documented implementation mechanisms. The findings show that floating typologies dominate the evidence base, whereas amphibious approaches are less frequent but more directly associated with in-place flood adaptation. Persistent gaps concern regulatory frameworks, infrastructure interfaces, life-cycle assessment, ecological validation, and long-term post-occupancy monitoring. The review concludes that scalability depends on context-specific siting, institutional permission, regulatory approval, and verifiable environmental performance.

Climate-driven intensification of pluvial and fluvial flooding increasingly challenges lowland cities in Central Europe, while conventional protection and land-use controls offer limited flexibility under growing hydrological variability. A planning-oriented framework is developed and tested to integrate hydro-adaptive housing into climate-resilient urban development using three typologies: elevated foundations, amphibious dwellings and modular floating platforms. The framework links hazard profiles and site-enabling conditions to typology selection and considers supporting blue–green measures within the broader adaptation context. It is applied to three flood-prone settings in northern Poland representing a coastal delta, a river confluence and a lower-river terrace. The methodology combines GIS-based hazard mapping; one-dimensional unsteady-flow HEC-RAS simulations for 50-, 100- and 500-year design events; and parametric structural modelling in Rhino–Grasshopper. Performance is assessed using maximum inundation depth, surface-water retention time, and a probabilistic building damage index. Amphibious dwellings reduce modelled 100-year flood damage by 62% relative to slab-on-grade construction, while modular floating platforms maintain habitability under water-level rises exceeding 5.0 m. In addition, bioretention and blue–green corridors reduce retention time by 18–31%. The results provide a planning-oriented decision logic for expanding adaptive housing options in flood-prone lowland settings under increasing hydrological variability.

This article discusses the problem of strategies concerning the processes of re-shaping the Baltic Sea southern coastline applied recently in North Poland. The undertaken research is an attempt to identify the relationship between the modifications of coastline forms and the positive changes of urban structures. First of all, it can be seen that these modifications are needed because of the problems of existing shoreline erosion. It can be also observed, that many realized interventions were helpful to save the land but they did not improve the condition of cities situated along the coast. In these cases, it is impossible to connect the sea coastline with the existing grid of public spaces which is a barrier to creating a system that could be perceived as a coherent landscape. The basis for proving the importance of special ways of shoreline modifications are comparative studies and in-field analyses. In facing the problems of coastal cities there is a need to analyse the condition of existing urban structures. Many studies made so far show that there are many problems which have to be identified and solved. Worth noting is the fact that these structures have a unique character because of their location. They play an important role as holiday resorts being an attraction for many inhabitants and visitors from all over the world. Such a role plays, for example, an important part in places such as Jarosławiec, Ustka or Kołobrzeg. However, analysing the strategies applied in recent years, it can be noted that they cannot be the only basis for the strengthening of connections between land and water helping to preserve the land, but they may also play an important role as a factor for initiating urban structures transformations. What is also important, it can be claimed that relationships between sea water and urban structures should be strengthened due to special forms of the coast line. They should be integrated into existing structures making them more comfortable and attractive while also protecting against threats from the water. Playing the role as a protector of land they should use special constructions being at the same time accessible to all users throughout the year and regardless of weather conditions. It is worth emphasizing that special treatment of the coastline helps to establish it as a public domain which is important in achieving high quality urban-water landscapes. Therefore it should be the objective of strategies which are being prepared for parts of coastlines waiting for intervention.