Digital Spy spoke to Tom Felton, Rupert Grint, Natalia Tena, Evanna Lynch, Warwick Davis and effects supremo Nick Dudman about the tour, and here's what they had to say.
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Asked what would most surprise people about the tour, Grint said: "How authentic it is. These sets are completely identical to how they were when we were filming... there's so much to see here."
Davies added: "I think the amount of stuff that's here which has been collected from all eight films. The detail, how real stuff looks under close scrutiny."
© Rex Features / Paul Grover/Rex Features
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Dudman agreed: "I think what will surprise people the most is the volume of stuff that's real, as opposed to digital. The place is just stuffed with it."
Felton made a similar point, saying: "A lot of people would have watched the Harry Potter films and thought, 'That's a computer, that's a computer'.
"Whether it's Aragog or the basilisk, or even the cauldrons with the self-stirring spoons... this magic is real. It's not smoke and mirrors, it actually exists."
© Rex Features / Paul Grover/Rex Features
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Tena said: "It's so great that they're not just going to be boxed up like most things. For people to actually see how much talent and effort went into stuff, I think it's beautiful."
Lynch said: "As a Harry Potter fan, I would have thought I knew everything inside out, but there are definitely little details that you wouldn't have noticed before."
Move through our red carpet gallery for the Harry Potter studio tour below:
