Malta
Malta’s stone city of Mdina, served as the original King’s Landing. San Anton Palace, the Maltese president’s residence, stood in for the Red Keep, where kings are murdered and brothers and sisters get way, way too close. Other island fortresses, notably Fort St. Angelo, Fort Ricasoli and Fort Manoel, provided the backdrop for other scenes in and around Westeros’ ruling city. One of Malta’s most spectacular natural monuments, the limestone archway known as the Azure Window, loomed over Daenerys’ wedding to beefy horseman Khal Drogo.
Iceland
What better place to shoot the coldest, snowiest part of the GoT world than Iceland? Vatnajökull National Park and the Svínafellsjökull glacier, both in the southwest, were picked for season 2, while most of season 3’s ultra-Wall action was filmed on and around frozen Lake Mývatn further north, littered with clumps of black lava from the active volcanos that dot the region. Thingvellir National Park, served as the home for the Wildlings.
The Wall
King's Landing, Pentos