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  ===Filming locations===
  Most of the episode was shot in the sets built in The Paint Hall studios in Belfast. Also in Northern Ireland, the Pollnagollum cave in Belmore Forest was used to film parts of the hideout of the Brotherhood, and the gardens of Gosford Castle served as the Riverrun exteriors where Lord Karstark was beheaded.
  The scenes with Daenerys were filmed in Morocco, and the ones with Jon in Iceland. The Wildlings camp was built by the shores of lake Mývatn, with its distinctive vertical lava formations clearly seen. The nearby grotto where Jon and Ygritte have sex is cave Grjótagjá; however, the cave was used mainly for establishing shot of Jon Snow and Ygritte in the cave, and most of this scene was filmed in the studio. The thermal water pool of the cave is actually used for bathing and is a popular tourist attraction.
  Finally, two Croatian exteriors appear in the episode: the conversation between Cersei and Littlefinger takes place at the inner terrace of Fort Lovrijenac, and Littlefinger's later visit to Sansa was filmed at the Trsteno Arboretum.