A Schengen visa is your key to touring all through Europe. A visa like this can be compared to a golden ticket that can give the holder more freedom to travel to their favourite countries in Europe without worrying about visa complications. To those unfamiliar with the Schengen visa term, it is simply a visa that permits its holder to visit 26 different countries throughout Europe on the same visa. All 26 of these countries have signed and adhered to the Schengen Agreement of 14 June 1985 which enables them to use a single visa.