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.

From luxury hotels on rails to simple, scenic meanderings through landscapes of high peaks, crystal clear lakes and dense jungle, there is no better way to travel than by train. Test your knowledge of some of the world’s most famous train journeys with these multiple choice questions...

Hawaii is a volcanic archipelago in the central Pacific Ocean, known for its beautiful beaches, laid back lifestyle and legendary surf. How much do you know about the Aloha state?

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?