Services of 2 experts to prepare a tentative list and a nomination dossier for Danube Delta, 17-27 September 1990

World Heritage partnerships for conservation

Ensuring that World Heritage sites sustain their outstanding universal value is an increasingly challenging mission in today’s complex world, where sites are vulnerable to the effects of uncontrolled urban development, unsustainable tourism practices, neglect, natural calamities, pollution, political instability, and conflict.