3. Megheramorne Quarry, Ireland – Castle black and Hardhome
Unlike the previous two, this Castle is an artificial castle.
Bits of each have been filmed at Megheramorne Quarry, others are filmed on other locations.
In the movie Castle Black features six separate towers, five fortified keeps, a great hall, and a series of tunnels that allow the castle’s grounds to be traversed during the long winters’ 10-foot-high snows. But in reality it is artificially built on a quarry site.