The 2013 edition of the Global Power City Index includes data from newly conducted surveys on the residents of all the cities included in the index to reflect most recent trends. A careful review of the data of some indicators was also performed. In addition, every effort was made to assess the ‘Urban Intangible Value’ of cities, a new value that will affect the urban power of a city in the future and which appeals to human sensitivities such as efficiency, accuracy, speed, cleanliness and security and safety of urban management, rather than just the city’s physical aspects. A simulation was carried out regarding the predicted effects on Tokyo of hosting the Olympic and Paralympic Games, using the results from monitoring the city’s comprehensive power over the five-year period since the GPCI was released in 2008.