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Westeros is one of the four continents in the known world, the others being Essos, Sothoryos, and Ulthos. Most of the area of Westeros is covered by a political entity known as the Seven Kingdoms, while the far north beyond the Wall includes the free folk. The closest foreign nations to Westeros are the Free Cities, a collection of independent city-states across the narrow sea in western Essos. To the south of Westeros lie the Summer Islands.