According to the Economist Safe City Index 2015 , Taipei confirms its position as one of the world's safest cities. The index is based on four categories: digital security, health security, infrastructure safety and personal safety. Here is the list: 1 Tokyo 2 Singapore 3 Osaka 4 Stockholm 5 Amsterdam 6 Sydney 7 Zurich 8 Toronto 9 Melbourne 10 New York 11 Hong Kong 12 San Francisco 13 Taipei 14 Montreal 15 Barcelona 16 Chicago 17 Los Angeles 18 London 19 Washington DC 20 Frankfurt Taipei performs best in terms of personal safety: it is the world's 5th city in this category. However, in the index of the top 25 cities, that is, the cities where it is best to live, Taipei ranks 21st. The top cities index is based on the data of 6 other indexes (Safe Cities, Liveability Rankings, Cost of Living, Business Environment Rankings, Democracy Index, Global Food Security Index).