Spanning across Austria, Slovenia, Croatia, Hungary and Serbia, the riverine landscape of the lower courses of the Drava and Mura and related Danube sections forms one of Europe’s most important bio-corridors. Since 1993, NGOs and public authorities have cooperated to work towards the protection of this unique landscape as a UNESCO Transboundary Biosphere Reserve “Mura-Drava-Danube” (TBR MDD) - the“Amazon of Europe”. However, the lack of operational cooperation for harmonising management practices between 12 single protected areas in the 5 TBR countries threatens the ecological integrity of the planned TBR MDD. Coop MDD aims to overcome these obstacles by establishing a strategic and operational framework for transboundary nature protection, restoration and management of the Mura-Drava-Danube river corridor in Austria, Slovenia, Hungary, Croatia and Serbia as the basis of a well-managed TBR MDD. Through workshops, study visits, capacity building, awareness-raising activities and pilot implementation of concrete actions in the field of restoration, stakeholder participation and environmental education, the cooperation of PA authorities and cross-sectoral stakeholders for management of TBR MDD will be established, and a wider acceptance by local stakeholders, inhabitants and visitors for establishment of TBR MDD will be achieved. The main project output - the Transboundary Management Programme for River-Dynamic Corridor Development - will be taken up by the 5-country ministerial Coordination Board as their baseline strategic and operational work programme towards establishment of the TBR MDD. This will set a solid foundation for-long term functional implementation of the 1 million-hectare, 700 km long TBR MDD in the context of transboundary nature conservation, making it Europes largest protected river corridor and worlds first penta-lateral UNESCO Biosphere Reserve.