ABSTRACT A rigorous understanding of the logic that support the transformation of European walls and fences requires a detailed study of the particular and interlinked visions of multiple actors beyond central states. This paper follows a multiscalar perspective to evaluate the logic of opposition to support from different actors regarding the border barriers between Melilla (Morocco-Spain) and Evros (Greece-Türkiye). It examines how neighboring states of Morocco and Türkiye, local governments, the European Union, and Amnesty International converge or not in their position towards each fence, considering their vision on specific dimensions of analysis, such as the purpose, suitability, and features of each fence. This paper adopts a qualitative methodology based on the compilation and analysis of discourses and official communications, local and international news media from 2013 to 2023, civil society reports, and scholarly literature. The article demonstrates more opposition to the Evros fence than the Melilla fence. Moreover, while various actors validate the purpose behind these artificial borders in reducing irregular migration, some actors show concerns about the effectiveness of this tool, and almost all stakeholders question the features of these fences. Notwithstanding this criticism, Spain and Greece have been able to advance in strengthening their fences.