A behind-the-scenes look at the Harry Potter cast returning to the original set at Leavesden studio for the retrospective special, debuting January 1 on HBO Max. Take a trip down memory lane when Harry Potter 20th Anniversary: #ReturntoHogwarts comes to HBO Max on New Year's Day. About HBO Max: HBO Max is WarnerMedia’s direct-to-consumer offering with 10,000 hours of curated premium content. HBO Max offers powerhouse programming for everyone in the home, bringing together HBO, a robust slate of new original series, key third-party licensed programs and movies, and fan favorites from WarnerMedia’s rich library including Warner Bros., New Line, DC, CNN, TNT, TBS, truTV, Turner Classic Movies, Cartoon Network, Adult Swim, Crunchyroll, Rooster Teeth, Looney Tunes and more. #HBOMax #WarnerMedia SUBSCRIBE TO HBO MAX http://bit.ly/HBOMaxYouTube GET HBO MAX https://itsh.bo/ways-to-get MORE HBO MAX HBO Max: https://hbom.ax/YT  Follow HBO Max on Instagram: http://bit.ly/HBOMaxInstagram Follow HBO Max on TikTok: https://hbom.ax/HBOMaxTT Follow HBO Max on Twitter: http://bit.ly/HBOMaxTwitter  Like HBO Max on Facebook: http://bit.ly/HBOMaxFacebook