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.

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...

Known for its fine wines and centuries old association with the arts, how much do you know about Western Europe’s largest country?

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?