McCann Copenhagen have found a « hidden flag » within the Coca Cola logo that just happens to be the flag of Denmark, the world’s happiest country by the U.N. McCann decided to take this discovery to Denmark’s biggest airport where it’s a tradition to welcome people with flags. By creating a special poster from where people could take flags straight from logo McCann gave everyone the chance to create a very happy, very Coke, welcome to the world’s happiest country.