HBO has returned to North Wales as filming for season three of House of the Dragon gets underway.

The hit HBO series, which tells the story of House Targaryen, is based on George R.R. Martin’s “Fire & Blood” books and is set 200 years before the events of Game of Thrones.

North Wales has already featured on the Game of Thrones spin-off, with filming for past series' having taken place at spots including:

  • Trefor Granite Quarry
  • Penmon Point
  • Beaumaris
  • Llanddwyn Beach
  • Porth y Cwch
  • Dinorwig Quarry

North Wales has been used for filming of previous seasons of House of the Dragon.North Wales has been used for the filming of previous seasons of House of the Dragon. (Image: Paula Hanks-Jones)

Film crews return to North Wales for House of the Dragon season 3

Warner Bros. confirmed last month (May 31, 2025) that production had commenced on the third season of HBO's House of the Dragon.

Film crews have now been spotted in North Wales, with reports that production is set to run throughout June and July.

The sites that will be used for filming, according to the Facebook group House of the Dragon Wales, are:

  • Dinorwig Quarry
  • Newborough Forest
  • Llanddwyn Beach
  • Penmon
  • Cwm Idwal
  • Capel Curig
  • Nant Peris
  • Flagstaff Quarry

Film crews have already been photographed at Dinorwig Quarry, Craig yr Undeb (Union Rock) and Flagstaff Quarry.

One of the stars of the show, Matt Smith (who plays Daemon Targaryen), has also reportedly been spotted in North Wales, filming scenes for House of the Dragon.

HBO and Warner Bros. have been contacted for comment.

House of the Dragon season 3 cast

Season three of House of the Dragon is set to feature a host of new and returning characters.

Returning cast members include:

  • Matt Smith (Daemon Targaryen)
  • Emma D'Arcy (Rhaenyra Targaryen)
  • Olivia Cooke (Alicent Hightower)
  • Steve Toussaint (Corlys Velaryon)
  • Rhys Ifans (Otto Hightwoer)
  • Fabien Frankel (Ser Criston Cole)
  • Ewan Mitchell (Aemond Targaryen)
  • Tom Glynn-Carney (Aegon II Targaryen)
  • Sonoya Mizuno (Mysaria 'The White Worm')
  • Harry Collett (Jacaerys Velaryon)
  • Bethany Antonia (Baela Targaryen)
  • Phoebe Campbell (Rhaena Targaryen)
  • Phia Saban (Helaena Targaryen)
  • Jefferson Hall (Tyland Lannister
    /Jason Lannister)
  • Freddie Fox (Gwayne Hightower)

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New cast members for season three of the Game of Thrones spin-off include:

  • Tommy Flanagan as Lord Roderick Dustin
  • Dan Fogler as Ser Torrhen Manderly
  • James Norton as Ormund Hightower

A release date for season three of House of the Dragon has yet to be revealed.

Have you seen HBO crews in North Wales filming House of the Dragon (season three)? Let us know in the comments below.