The latest update to the Henley Passport Index shows that Singapore reclaimed its crown as the most powerful passport in the world with visa-free access to 195 out of 227 destinations worldwide. Likewise, Japan remains the runner-up with a score of 193, according to the index which ranks all the worlds 199 passports according to the number of destinations they can access without a prior visa. The rankings are based on official data from the International Air Transport Association (IATA).