**Author details**

*Peripheral Territories, Tourism, and Regional Development*

territorial development strategies in CBC areas [14].

"The authors declare no conflict of interest."

In general, CBC planning reveals a loss of engagement at the local, regional, and meso-level, which need to be more actively included in the EU and macro-regional level. This is an extra obstacle to borderlands' successful regional development [9–11, 13]. Thus, it can also be assumed that at this level of CBC planning, there is a shortage of soft, resilient forms of governance which demands a tremendous political commitment as well as the use of already learned lessons regarding coordination and management at different levels that could be applied in this particular case study. The EU funds numerous projects and strategies on the Iberian Peninsula. However, in addition to all these projects and strategies along the Portuguese-Spanish border, several obstacles should be considered for further better territorial and sustainable development [10–22]. Some of them are presented in **Table 2**. The development of a common regional strategy needs all members' involvement in the decision-making process to succeed all obstacles in coordination and comprehensive border corridors governance to establish integrated territorial development [1–3, 7, 8]. A case study of the CBC project in Iberian territory was presented to understand better the barriers to well-developed joint regional growth in Iberian territory. Several studies have already been conducted, which allowed us to analyze and evaluate outcomes. Border areas, which are also sparsely populated, should certainly support the EU in terms of flexible policies to enable their sustain-

Moreover, this study also aims to be useful for policymakers in moving from traditional data sources in the formation and planning of growth corridors to new, more comprehensive data sources that will give better results in preparing joint

The authors would like to acknowledge the financial support of the National FundsFundação para a Ciência e a Tecnologia, I.P. (Portuguese Foundation for Science and Technology) by the project UIDB/05064/2020 (VALORIZA – Research Centre for Endogenous Resource Valorization). Also, the authors wish to acknowledge funding for this research work from the VI Regional Research Plan and the Regional Government of Extremadura and the European Regional Development

Fund (ERDF), associated with financing the research group Sustainable

Development and Territorial Planning (GR18052), the Environmental Resources Analysis Research Group (GR18054) and Functional Study of Mediterranean

**4. Discussion and conclusions**

able development.

**Acknowledgements**

Ecosystems (GR18078).

**Conflict of interest**

**40**

Ana Vulevic1,5\*, Rui Alexandre Castanho2,3,4,5,6, José Manuel Naranjo Gómez4,5,7, José Cabezas5,8, Luis Fernández-Pozo5,8, Jacinto Garrido Velarde4,9, José Martín Gallardo10, Sérgio Lousada4,5,11 and Luís Loures5,12

1 Institute of Trasportation CIP, Belgrade, Serbia

2 Faculty of Applied Sciences, WSB University, Dąbrowa Górnicza, Poland

3 Aquageo Ambiente Legal—University of Campinas, Brazil (UNICAMP), Campinas, Brazil

4 CITUR - Madeira - Centre for Tourism Research, Development and Innovation, Funchal, Madeira, Portugal

5 VALORIZA - Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre (IPP), Portalegre, Portugal

6 School of Business and Economics and CEEAplA, University of Azores, Ponta Delgada, Portugal

7 Agricultural School, University of Extremadura, Badajoz, Spain

8 ARAM, University of Extremadura, Badajoz, Spain

9 University of Extremadura, Badajoz, Spain

10 Functional Studies of Mediterranean Ecosystems, University of Extremadura, Badajoz, Spain

11 Faculty of Exact Sciences and Engineering (FCEE), Department of Civil Engineering and Geology (DECG), University of Madeira (UMa), Funchal, Portugal

12 Research Centre for Tourism, Sustainability and Well-being (CinTurs), University of Algarve, Faro, Portugal

\*Address all correspondence to: anavukvu@gmail.com

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