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  ===Filming locations===
  To film the scenes at the Wall the production built a set on the abandoned quarry of Magheramorne, a few minutes north of Belfast. The composite set (with both exteriors and interiors) consisted of a large section of Castle Black including the courtyard, the ravenry, the mess hall and the barracks, and used the stone wall of the quarry as the basis for the ice wall that protects Westeros from the dangers that dwell beyond. They also made a real elevator to lift the rangers to the top of the Wall.
  For the streets of King's Landing, the production flew to Malta. The gate of Fort Ricasoli doubled as the King's Gate, shown at the beginning of the episode when the royal entourage enters the city. The entrance of the Red Keep used when Catelyn and Rodrik enter the fortification corresponds to Mdina Gate, and also in Mdina the Pjazza Mesquita is the location for the entrance to the brothel owned by Lord Baelish.
  Ron Donachie, the actor playing Ser Rodrik Cassel, said that the scene where he entered King's Landing was his favourite moment. Visiting a museum in the Maltese capital of Valletta, Donachie had seen a painting of armed knights riding through that Gate of Mdina itself and found exciting that to be able to do the same thing, "especially in Rodrik’s full-scale Stark battle regalia".