Alps / Danube / Elbe / Prut River / Black Forest Mountains / Rhine river / Elbe river / River Rhine / Black Sea / Aegean Sea / Adriatic Sea / Leitha Mountains / Cazane Gorge / Carpathians / Danube river / Southern Carpathian Mountains / River Basin Management Plans Venice / Humber river / Douro / Rhine / /
Organization
Regional Bureau for Science and Culture in Europe / European Commission / EU Commission / International Commission for the Protection / World Wide Fund for Nature / International Commission for the Protection of the Rhine / European Union / International Commission for Protection of the Danube River / United Nations Educational Scientific and Cultural Organization / /