If you’re a Harry Potter fan, the Warner Bros. Studio Tour is a must-do day trip from London. It’s about an hour away and super easy to get to with a guided tour. You’ll get to walk through actual sets from the films like the Great Hall and Diagon Alley, see costumes, props, and learn how the magic was brought to life behind the scenes. It’s a fun and memorable experience, even if you’ve only seen a few of the movies.