The Asia-Pacific region boasts some of the world's most liveable cities but also a number of the most wretched capitals on earth, according to survey results issued on Tuesday. Vancouver in western Canada topped the global list compiled by research firm the Economist Intelligence Unit (EIU). The EIU ranked 127 cities on the basis of five criteria, stability, health care, culture and the environment, education and infrastructure. They were graded on a scale of zero to 100 per cent, with zero as the best possible score. Vancouver scored a "1" while Port Moresby had a "66" grade. "With low crime, little threat from instability or terrorism and a highly developed infrastructure, Canada has the most liveable destinations in the world," an EIU statement said. Port Moresby, Papua New Guinea's notorious capital, tied with Algiers for the dubious title of worst city to live in. Other Asia-Pacific cities in the very bottom of the list were Dhaka, Karachi, Phnom Penh and Mumbai, which were ranked alongside Lagos, Abidjan, Harare, Tehran and Bogota. Asia has "the best and worst of both worlds.