England:
* Warner Bros. Studios Leavesden, Hertfordshire: This is the primary filming location for the entire Harry Potter series, and most of the film was shot here, including Hogwarts interiors, Diagon Alley, the Great Hall, and many other sets.
* Alnwick Castle, Northumberland: Used for exterior shots of Hogwarts in the first two films, it also makes a cameo appearance in this film as the location where Harry and Dumbledore first see the locket Horcrux.
* Lacock Abbey, Wiltshire: This beautiful abbey has been used for various Hogwarts scenes throughout the series, including the potions classroom, the library, and the Mirror of Erised scene in "Sorcerer's Stone."
* Durham Cathedral, Durham: A location for various Hogwarts scenes, including the Herbology greenhouse and the exterior of Hogwarts.
* Leadenhall Market, London: This iconic Victorian covered market was transformed into Diagon Alley for the film.
* Virginia Water, Surrey: Used for filming the exterior of Hogwarts during the climactic battle scene.
* Cliveden House, Buckinghamshire: The stately home was used for the scene where Dumbledore and Harry visit the grave of Hepzibah Smith.
* Malham Cove, Yorkshire: Featured as the location where Dumbledore and Harry visit the cave and retrieve the locket Horcrux.
Other Locations:
* Glenfinnan, Scotland: This stunning location is famous for the iconic "Hogwarts Express" train journey, featured in many of the films, including "Half-Blood Prince."
* Loch Shiel, Scotland: The lake was used for scenes featuring the Hogwarts Express and the surrounding landscape.
* Glencoe, Scotland: This dramatic and beautiful landscape was used for shots of the Scottish Highlands and the scene where Harry and Dumbledore arrive in the cave.
Keep in mind that these are just some of the locations used, and many other smaller filming locations were also used throughout the production.