What is the setting of A Feast for Crows by George R.R. Martin?

A Feast For Crows is set in a fictitious world that mirrors several regions of our own. King's Landing and Oldtown, as well as the Vale and most of the area around there are very similar to medieval Europe. Dorne puts one in mind of the Middle East, and the Iron Born are very similar to the Vikings. In Westeros, Seasons seem to last far longer than normal. Physically, the land is divided into various regions that represent the extremes of climate. The area around King's Landing is temperate forests and plains, sliced by rivers and sits between mountains and the sea. To the north, the land gets rougher and the climate gets colder, until finally the kingdom ends at the Wall, a great wall of ice that defines the northern border.