Current transformation processes towards sustainability and equity that planning seeks to frame require a transboundary perspective on problems and policy responses. While local, regional or national authorities are typically endowed with the mandate for regulatory spatial planning, the existence and importance of planning across administrative borders of jurisdictions is evident. Cross-border regions and large-scale macro-regions are often associated with European spatial planning, but transboundary planning processes also exist within countries at various scales, visible, for example, in the emergence of soft spaces such as city-regions. These transboundary planning processes are especially interesting regarding their governance arrangements, their relationship with statutory planning systems and practices, and their mechanisms for democratic control and participation. Moreover, new planning scales might challenge existing administrative divisions and practices, causing or solving challenges related to policy integration.

This track discusses new planning spaces, formal and informal planning arrangements and comparative perspectives on planning systems, cultures, and practices in Europe and beyond across various scales and borders. We are interested in exploring not only the spatial but also the institutional and practice implications of such new and, at times, 'transitional' planning spaces. Comparative research, including the local, city-regional, regional, national and supra-national levels, is most welcome. Research on planning systems and planning cultures can provide essential insights into ideas, policies and practices – and the role actors play in shaping these – especially when transcending national perspectives and exploring local and regional specificities. Comparative perspectives within and between different country contexts can also reveal processes of policy transfer and policy diffusion and illustrate how planning ideas travel across borders.

We welcome theoretical perspectives, empirical, analytical work, and policy-centred discussions alike. For example, contributions to the Track BORDERS might address the following issues:

• Comparative perspectives on planning systems and planning cultures
• The changing nature and role of borders in spatial planning
• Visions and strategies at the macro-regional or continental level
• Planning across internal and external EU borders
• Drivers for cross-border cooperation and EU integration
• Wicked problems such as climate change as transboundary challenges for planning
• Maritime spatial planning and its linkages and interactions with planning on land
• Processes of international policy transfer and policy diffusion
• Spatial planning in functional regions and soft spaces
• Democratic mechanisms and citizen involvement in non-statutory planning processes
• Instances of rescaling and the resulting processes of institutional change
• Planning beyond territorialism
• Planning practices that cross administrative divisions and sectoral siloes
• The roleof city-regions in the sustainability debate and the just and green transition

Keywords: planning systems, regional planning, city regions, soft spaces, planning cultures, EU Cohesion Policy, cross-border cooperation, comparative planning studies, transnational planning, actors, scales, institutional change, policy transitiona

1. Hossam Hewidy, et al: Contested Futures: Decoding The Emergence And Evolution Of Diverse Interests In Multi-Scale Networks Of Planning
2. Simin Yan: From Jurisdictional Fragmentation To Regional Integration? A Study On Cross-Border Planning And Governance In Yangtze River Delta, China
3. Donato Casavola: Metropolitan Governance In The European Union. A Classification Of Existing Institutional Models

1. Karina Pallagst: Planning Cultures In Exchange – Evidence Derived From A Cross-Border Simulation Game
2. Francesca Mazza: Framing The Socio-Spatial Regeneration Of Fragile Mountain Regions. Insights From The Alta Valtellina Case
3. Yin Dou: Study On The Characteristics And Influencing Factors Of Regional Intergovernmental Relationships Network, Based On The Analysis Of 41 Urban Planning Texts
4. Rashed Azizi: Multi-Scalar Design Experiments In Peri-Urban Areas: Agile Strategies For Long-Term Sustainability - Case Studies: Hasan Awa, Kurdistan, Iran And Lara, Victoria, Australia
5. Nicolás Santelices Artaza: Looking At Terrestrial And Marine Spatial Planning As A Continuum Through Land-Sea Interactions
6. Paula Vale de Paula, et al: The Regeneration of Urban waterfronts: Comparative Analysis of European Case Studies

1. Anna Growe: Cultural Networks In Cross-Border Regions And The National Border Effect – Examples From Three Eu Cross-Border Regions
2. Sylwia Dołzbłasz: Cross-Border Cooperation In Poland In Spatial And Organizational Dimensions
3. Rodrigo Vielmo Moura: Analysing The Transboundary Impact Of Local Cross-Border Cooperation, Multi-Level Governance And Eu Cohesion Policy Influence To Address Fragile Peripheral Areas In Northern Italy
4. Andrés Martinez: The Franco-Spanish Mediterranean Strip: An Opportunity To Turn Applied Research Into Trans-Border Planning
5. Zheng Liu: Study On Cross-Border Integration And Development In The Hengqin Guangdong-Macao In-Depth Cooperation Zone
6. Isabella Traeger et al: Mapping Territorial Fragilities, Cross-Border Cooperation and Resilience in Italian Border Areas. Insights from the Italian Borderscapes After 2020 Project

1. Lin Tian: Research And Reflections On Cross-Border Periphery-Core Industrial Linkages In Urban Regions: The Case Of Three Cities Adjacent To Shanghai, China
2. Shuo Han: Planning As An Action Framework For The Rural Tourism Integration Across Administrative Boundaries: A Comparative Study Based On Shanghai, China And Lombardy Region, Italy
3. Qixuan Wang: Institutional Construction And Spatial Governance Of Export-Oriented Zones From The Perspective Of State Entrepreneurialism: A Case Study Of Pilot Free Trade Zone In China
4. Wenbo Xu: Administrative Boundary Effects Of Cross-Border Migration Of Manufacturing Firms: A Case Study From The Pearl River Delta In China
5. Zhanyi Luo: Towards A New Model Of Asian Edge City? Measuring The Functional Evolution Of Towns In Cross Provincial-Border Areas In Metropolitan Shanghai, China

1. Theresia Morandell: Conceptualizing City-Regional Spatial Planning In A Fragmented Urban Landscape
2. Zhuoxin Li: Shanghai Metropolitan Area: A Comparative Analysis Of The Circular Subdivisions Between Shanghai And New York From The Perspective Of Global City-Region
3. Peter Schmitt: Unveiling The Culturised Practices Of Regional Planning – The Case Of Stockholm, Sweden
4. Alois Humer: Post-Pandemic Times And Multi-Crises As Game Changers Of Regional Planning Cultures? Observations From The Urban Region Of Vienna
5. Runyi Gao: The Planning System At The Level Of Metropolitan Area In China
6. Agnes Förster: Multi-Level Governance And Design Of Impulse Projects In International Building Exhibitions (IBA)

1. Felipe Francisco De Souza: The Role Of Critical Junctures In Land Readjustment Practices: The Japanese Asset Price Bubble (1986–1991) And The German Reunification Process (1990)
2. Mengyuan Jia: River Basin Management And Urban Development: The Challenges And Coordinated Planning Policies Within The Planning System Of China
3. Flore Guichot: Transit-Oriented Development In Asymmetrical Context: Learning From Cross-Border Paradoxes In The Great Geneva
4. Yuxiao Ma: Coordinated Optimization Of Multi-Level Rail Transit Network And Regional Spatial: International Contextual Differences And The Case Of Shanghai
5. Chandrima Mukhopadhyay: Integrated Planning And Implementation Of Megaproject-Mega region/Associated Urban Development To Improve (Mutual) Success And Sustainability
6. Ma Xiao: Transnational Transport Corporations In Global North - Chinese Transnational State Capitalism In Victoria Australia