The Lion Gate is one of the seven huge gates that surround the huge walls of King's Landing. It is located near the center of the southwest wall. The Goldroad to Lannisport in Westerlands starts at the Lion Gate.
In the reign of Maegor I Targaryen, Maegor had his own wife and queen, Alys Harroway, tortured to death and executed. Following her death, Alys's body was cut into seven parts and mounted on spikes above each of the seven gates of the city, one of which was above the Lion Gate.