Often seen at the top of the rankings for Happiest Country in the World, Denmark, amongst other Scandinavian countries, is one of the friendliest and safest destinations in the world to visit as a solo traveller. More specifically, Copenhagen, the countries capital, boasts low crime rates and is notorious for its relaxed lifestyle. Cycling is one of the main ways to get about in Copenhagen so hire a bike and explore the city at a low cost, just as the locals do.