Treasure Hunt Trondheim is a location based activity app where you move between different locations in Trondheim to collect virtual gold coins.You get riddles that you must solve. The riddles are based on historic facts an places in Trondheim, and you must go to the place you believe is the answer to the riddle. If you are in the right location, a virtual gold coin will appear on your screen, and you will get the next riddle.You find the answer to all the riddles in the app Tidsreise Trondheim, the paper book Tidsreise Trondheim Barnas Byhistorie, or the web version of the app,, which is available to all pupils in Trondheim municipality with FEIDE log-in.