With its rich biodiversity, the world’s first Five-country Biosphere Reserve Mura-Drava-Danube is not only Europe's largest protected river habitat, but also stands as an example of transboundary cooperation. Historically shielded during the Cold War, it is now a haven for biodiversity, serving as a critical habitat for more than 5,000 species, including the white-tailed eagle and black stork, playing a vital role in regional ecosystems and supporting the well-being of local communities. In the face of challenges such as habitat destruction, the climate crisis and declining biodiversity, international projects aim to ensure the resilience of this unique habitat by promoting sustainable management and implementing restoration efforts.