"Is this all real? Or has this been happening inside my head?"
The subject of this article is a real-life person, company, product, or creative work that has been mentioned "in-universe" in a canon source. The Harry Potter Wiki is written from the perspective that all information presented in canon is true (e.g., Hogwarts really exists), and, as such, details contained in this article may differ from real world facts.
In 2012, The Warner Bros. Studio Tour opened on the Leavesden Studios site. The Warner Bros. Studio Tour offers visitors the unique opportunity to explore two soundstages and a backlot filled with original sets, animatronic creatures and breathtaking special effects from the Harry Potter film franchsise.