Global Power City Index
The Institute for Urban Strategies at The Mori Memorial Foundation in Tokyo issued a comprehensive study of global cities in 2018. They are ranked based on six categories: economy, research and development, cultural interaction, livability, environment, and accessibility, with 70 individual indicators among them. The top ten world cities are also ranked by subjective categories including manager, researcher, artist, visitor and resident.[13]
Global Power City top 10: 1. London, 2. New York City, 3. Tokyo, 4. Paris, 5. Singapore, 6. Amsterdam, 7. Seoul, 8. Berlin, 9. Hong Kong, 10. Sydney.