tourism History timeline By reeefe 1927 First International Congress 1927 First Internatinal Congress La Haya 1947 The union move from la Haya to Geneva Period: 1947 to 1975 IUOTO 1951 International Arrivals 25 MILLIONS 1967 International Tourism Year 1971 Internationals Arrivals 166 MILLIONS Period: 1975 to 1998 OMT-WTO-BTO 1976 UNWTO established at madrid Period: 1998 to 2018 UNWTO 2003 OMT new organism of the ONU 2004 UNWTO name and branding are launched 2012 International Arrivals +1 BILLION 2017 International year of sustainable tourism for developement 2019 World REcord of tourist 1.5 BILLION