Guwahati/13th October’2017 (Prag News Desk): Global Power City Index (GPCI) have ranked London city as the number one city in the world. London was ranked number one city in the world from the last six years published by Mori Memorial Foundation. It has been ranked after highlighting its strength in cultural, transport etc. London is list top as a major centre for innovation in the world. In the report released by GPCI ranked other major 44 cities across the world. The cities were ranked with six key measures including the economy, culture, accessibility, environment, livability and research and development. With the strong performed by London with measures areas it has ranked ahead of New York, Tokyo, Paris, Singapore. Around 19.1 million tourists have visited the London city last year.