UNESCO World Heritage Sites are places of extraordinary historical, cultural, or natural value that are recognized, preserved, and protected by this international organization. You’ll visit three UNESCO World Heritage Sites on this river cruise: the Hungarian capital of Budapest, one of the world’s outstanding urban landscapes; historic Pecs, Hungary, which features the famed Roman Necropolis; and Hungary’s Puszta steppe region, which consists of a vast area of plains and wetlands in eastern Hungary. Traditional forms of land use, such as the grazing of domestic animals, have been present in this pastoral society for more than two millennia.