 In 2015, Hanoi is ranked 39th by Emporis in the list of world cities with most skyscrapers over 100 m; its two tallest buildings are Hanoi Landmark 72 Tower (336 m, second tallest in Vietnam after Ho Chi Minh City's Landmark 81 and third tallest in south-east Asia after Malaysia's Petronas Towers) and Hanoi Lotte Center (272 m, also, third tallest in Vietnam).Public outcry in opposition to the redevelopment of culturally significant areas in Hanoi persuaded the national government to implement a low-rise policy surrounding Hoàn Kiếm Lake.The Ba Đình District is also protected from commercial redevelopment.