In Game of Thrones, what continent lies across the Narrow Sea from Westeros?

In Game of Thrones, the continent that lies across the Narrow Sea from Westeros is Essos. Essos is a vast and diverse continent located to the east of Westeros, separated by the Narrow Sea. It is home to various cultures, cities, and regions, including the Free Cities, the Dothraki Sea, Slaver's Bay, and more. Throughout the series, characters often travel between Westeros and Essos, and the continent plays a significant role in the overall narrative of the story.