Warner Bros. Harry Potter Studio Tour London

Serving as the backdrop to some of the film series' most iconic scenes - including the Yule Ball and the Battle of Hogwarts - the Great Hall was first built for Harry Potter and the Philosopher's Stone in 2000 and was used as a key set for seven more films. Standing inside it is one of the most extraordinary moments of the entire tour.

The Forbidden Forest seen in Harry Potter and the Philosopher's Stone was a combination of location and studio shooting. This moved entirely to the studio for Harry Potter and the Chamber of Secrets to house Aragog's lair, and continued to grow throughout the film series.

The Hogwarts Express locomotive transported hundreds of students from Platform 9¾ to Hogwarts School of Witchcraft and Wizardry. During Harry Potter and the Deathly Hallows - Part 2, part of the station platform was recreated on a soundstage at Leavesden, complete with the track and the train.

The Diagon Alley set constantly changed throughout the film series - walls shifted, shop fronts moved, and entire buildings were carefully tweaked, leaning just slightly, to create the street seen in the films.

From Harry Potter first discovering Diagon Alley to the famous trio escaping on a Ukrainian Ironbelly dragon in their quest for a Horcrux, Gringotts Wizarding Bank played an important role throughout the film series.

A fan-favourite set from the Harry Potter film series, where students were taught their Herbology lessons with Professor Pomona Sprout. Built by the original Harry Potter filmmakers, the greenhouse is home to many exotic and magical plants.

During filming, Dumbledore's office consisted of not one but three circular rooms, with each room separated by removable wild walls allowing cameras to film from various angles. The walls are decorated with portraits of previous headteachers, and magnificent glass-fronted bookcases display an array of magical artefacts.

Throughout the Harry Potter film series, the Hogwarts Bridge extends from the Hogwarts Clock Tower all the way to the stone circle on the way to Hagrid's Hut, featuring a gothic design closely tied to Hogwarts and fitting the Scottish landscape surrounding the castle.

Over 950 potion jars line the walls of the classroom, each with unique props inside including baked animal bones, dried leaves, herbs, and shrunken heads made by the props department. Each jar features a label hand-designed by graphic design duo MinaLima.

Nearly 900 memory vials and labels were created for the cabinet found in Professor Dumbledore's office. Each label was hand-designed by the Graphics Department, with some featuring familiar character names including Argus Filch and Professor McGonagall.

Weasleys' Wizard Wheezes was designed to look like an 18th century storefront and took more than three months to build - with much of that time spent constructing the 20-foot mannequin above the main entrance. 120 different products were designed by concept artists. The Puking Pastilles dispenser was created by Head Propmaker Pierre Bohanna and was designed to be both funny and disgusting.

Quidditch uniforms evolved throughout the film series - from thick robes in the first two films to lighter, sportier robes with players' names and numbers on the back in later films. By Harry Potter and the Half-Blood Prince, players were given tracksuit-style training clothes with elbow and knee pads added to match gear.

Costume Designer Jany Temime designed over 300 costumes for the Yule Ball, requiring over 100 extra costume staff. Hermione's iconic gown took three months to create and was made from yards of pink silk and 12 metres of chiffon. A Wizard's Tuxedo was created for Hogwarts boys in satin silk, while Durmstrang students wore military dress uniforms.

The distinctive French Blue fabric of the Beauxbatons uniform was chosen to stand out from the muted blacks, browns, and greys of other school colours. The iconic pointed Beauxbatons hat was designed and produced by renowned milliner Philip Treacy.

The final scene of Harry Potter and the Deathly Hallows - Part 2 required Costume Designer Jany Temime to age the core cast's costumes while keeping to a similar palette of pinks, oranges, blues, and browns seen throughout the series. Draco Malfoy can be seen wearing his father's ring and tie pin to show he had taken over his father's role within the family.

Often mistaken for a visual effect, the Chamber of Secrets door is a fully operational creation by the Special Effects team. Articulated snakes slither along slotted tracks powered by an electric motor hidden behind the door, with each snake individually cast in resin and painted.

Several versions of the Invisibility Cloak were made across the films, including a version with a green fabric lining allowing the Visual Effects Department to make characters invisible in post-production. The cloak on display at the Studio Tour was created from special velvet fabric with Celtic symbols and ancient runes printed onto it.

Try the green screen experience yourself and fly a broomstick just like the cast did during filming - one of the most popular interactive moments at the Studio Tour.