Known for its beautiful location, impossibly steep hills and iconic Golden Gate Bridge, San Francisco is one of America’s most cosmopolitan cities. Test your knowledge of the ‘city by the bay’ with these multiple choice questions...

As well as providing drainage channels for surface water and habitats for a diverse range of creatures, rivers boast some truly amazing scenery. Test your knowledge of the world's rivers with our multiple choice questions.

The world's largest country, whose capital is reportedly home to more billionaires per capita than anywhere else on Earth, how much do you know about Russia?

Home to more than two million saunas and known as the ‘Land of a Thousand Lakes’, how much do you know about the Nordic nation of Finland?