You may have heard of or watched the hit TV show Game of Thrones Game of Thrones is one of the most watched TV show of all time. Since it was first released in 2011, it has sparked a great boost in adventure travel interest. Many of the "North of the Wall" scenes are filmed in Iceland and the filming locations have gained a high and unprecedented number of visitors these last years. The gaining of visitors has been named "the Game of Thrones effect" as fans from all over the world flock to the shows shooting locations. Dimmuborgir east of Mývatn in North Iceland "dark cities or dark forts" is a large lava field with lava caves, rocks and bizarre lava formations. This area was used to film scenes of Wildling leader Mance Rayder’s camp in season three. Filming took place in temperatures as low as -11C.
Grjótagjá is a small lava near lake Mývatn North Iceland, with a thermal spring inside.
In early 18th century the outlaw Jón Markússon lived there and used the cave for bathing. Until the 1970s Grjótagjá was a popular bathing site. But during the eruptions from 1975 to 1984 the temperature of the water rose to more than 50 °C (122 °F), though the temperature is slowly decreasing and has fallen below 50 °C again. The nearby lava cave of Stóragjá is being used as an alternative bathing site.
Grjótagjá was used as a location for filming the fifth episode of the third season, called "Kissed by Fire". wiki
Skaftafell is a wilderness area in Iceland's Vatnajökull National Park. Trails lead to Kristínartindar Mountain and to the Svartifoss waterfall, which tumbles over black basalt columns. Skaftafell is featuring prominently in the scenes beyond the wall in the series.
Vatnajökull is the largest and most voluminous ice cap in Iceland, and one of the largest in area in Europe. It appears in season two.
5. Thingvellir National Park
Iceland doesn't just fill in for the land beyond The Wall. The wildling camp is actually found in the Thingvellir National Park, not far from Reykjavik. You can see it in season four, when Brienne and the Hound engage in a bloody battle.