Game of Thrones (season 3) was filmed primarily in the center of Ireland.
Game of Thrones (season 3) . The show was filmed primarily in Ireland , Northern Ireland , Croatia , Iceland and Morocco . Season three like the previous season mainly centres around the war of the five kings ; after the death of Renly Baratheon ( Gethin Anthony ) , all four kings in Westeros believes to have a claim to the Iron Throne , besides Robb Stark ( Richard Madden ) , who seeks vengeance for the death of his father , Lord Eddard `` Ned '' Stark ( Sean Bean ) .