LONDON  - JK Rowling has put down her pen, the films and video games have made a fortune and the actors have moved on, but Harry Potter refuses to go quietly - or at least Warner Bros won’t let him.

“The Making of Harry Potter”, which opens Saturday, is the latest spin-off from the best-selling books about the boy wizard, promising a chance to re-live his adventures with a trip through the set of the blockbuster movies.

Located in 14,000 square metres of hangar space adjoining Leavesden studios outside London, the walking tour takes visitors through Hogwarts and Diagon Alley, and offers a glimpse of how the magic made it onto the big screen. Warner Bros hopes to entice 5,000 people through the door each day, with tickets costing £83 for a family of four, presenting it as a unique, behind-the-scenes look at one of the world’s most popular characters.

The team who worked on the films “really wanted everybody to be able to see these sets, all these treasures, which had so much British craftsmanship going into them,” said Sarah Roots, vice president of Warner Bros Studio Tour London. For the first time, the tour allows Muggles - non-wizards - the chance to walk down Diagon Alley, the bustling street where Harry and his fellow students go to buy their first magic wands, owls and other school equipment. About 3,000 wands were made for the eight films, many of them broken by Daniel Radcliffe, the actor who played Harry, who used them as drumsticks during down-time on set.