Lilidorei on The One Show 

A magical kingdom full of fairies, elves, pixies and goblins has opened in the grounds of Alnwick Castle. Lilidorei (pronounced lily-dory) is the largest play structure in the world and is the brainchild of Jane Percy, The Duchess of Northumberland. The idea is to encourage children to tear themselves away from their mobile phone and rediscover their imaginations. Here's Sharuna Sagar's film for The One Show.