Dunluce Castle, Northern Ireland — Pyke Castle
The scenic Dunluce Castle stands in for Pyke, the ancestral home of House Greyjoy, although as you can see, the Game of Thrones special effects team did some touching up:
"[SPOILERS] I visited Ireland last week & took a photo of Dunluce Castle, the filming location for Seat of House Greyjoy, the great castle of Pyke. from gameofthrones"
Still, the castle is perfect for the Iron Islands — it looks like it’s rising right out of the sea! The castle has sat in this spot since the late Middle Ages.