The Kingdom of Adarlan is a fictional realm in the "Throne of Glass" series by Sarah J. Maas. It is known for its powerful monarchy and military strength, ruled by King Gavriel. The kingdom is characterized by its vast landscapes, including cities, forests, and mountains, and is home to various cultures and peoples. Adarlan has a complex history marked by conquest and expansion. The kingdom is infamous for its oppressive regime, particularly against magic users, leading to widespread fear and resistance. The capital city, Rifthold, serves as the political and economic center, where significant events unfold throughout the series.