<ul><li>The Cliffs of Moher in County Clare, Ireland, with 744,000 Instagram hashtags, is the most popular Harry Potter filming location.</li><li>Glen Coe in Argyll, Scotland, known for Hagrid's hut, has 654,000 Instagram hashtags.</li><li>Glenfinnan Viaduct in the Scottish Highlands, seen in four Harry Potter movies, has 92,400 Instagram hashtags.</li><li>Durham Cathedral in Durham, appearing in the first two films, has 88,500 Instagram hashtags.</li></ul>

Harry Potter Day: Most popular film locations according to Instagram

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