Milford Sound Marine Reserve, and the Te Wahipounamu World Heritage site. It has been judged the world's top travel destination in an international survey and is acclaimed as New Zealand's most famous tourist destination.Rudyard Kipling had previously called it the eighth Wonder of the World.[4Milford Sound is named after Milford Haven in Wales, while the Cleddau River which flows into the sound is also named for its Welsh namesake. The Māori named the sound Piopiotahi after the thrush-like piopio bird, now extinct. Piopiotahi means "a single piopio", harking back to the legend of Māui trying to win immortality for mankind - when Maui died in the attempt, a piopio was said to have flown here in mourning.