Today the story of Cornelia Hahn Oberlander of Vancouver - one of the greatest landscape architects of the modern era. The world's most valuable award in that field is The Cornelia Hahn Oberlander International Landscape Architect Prize. We hear the story of her escape from Nazi Germany, her early landscape works in Philadelphia public housing, her stunning park at Expo 67, her innovation at Canada's National Gallery and the Northwest Territories Legislature, and her pioneering green roofs at Vancouver's Robson Square and Public Library.