King's Landing ( https://gameofthrones.fandom.com/wiki/King%27s_Landing ) is the largest city within the Seven Kingdoms with a population of approximately 500,000. It is located on a bay called the Blackwater and, usually, the weather is quite warm, however since Winter has come, the ruins of the city are covered in ash and snow. This ( https://external-preview.redd.it/IVpsKg6BsIc_Bu_8XbJM8G319rDqv1JIvajHiAXK31A.jpg?auto=webp&s=d89e3a08f7465886845a2f8f94fee0583159b974 ) is a map of the layout of the city and, as you can see, The Great Sept of Baelor is at the very center - or, rather, it was before its explosion. Then on one of the far ends, near Flea Bottom and bordered by the Blackwater Bay is the Red Keep - otherwise known as the location of the Iron Throne.

Of course the buildings, houses, monuments and so forth as basically in ruins now thanks to Daenerys and Drogon. The entire city was more or less set ablaze by dragon-fire and tens of thousands of people died. Furthermore, after Daenerys's death, Drogon melted the Iron Throne. But the city is still an impressive, if ghostly, sight.