Geocaching is a treasure hunt for the digital generation. Visit one of these National Trust places, follow the co-ordinates on a smartphone app or GPS, and see if you and the kids can find hidden boxes, known as ‘caches’.
Inside most caches you’ll find a log book for you to leave a message and a strange array of trinkets that people have left to swap.
Geocaching is one of our 50 Things to do before you’re 11 ¾.
