Heiangu (the Outer Palace Precincts), the palace, was located on the northern side of Heiankyo, and the dairi measured approximately 300 m from north to south and 200 m from east to west in the easterly of the center within the Heiangu.
平安京の北辺には宮城である平安宮（大内裏）があり、その内部の中央東寄りに南北約300m、東西約200mの内裏が存在した。