The Edo Castle in this period constituted a central Honmaru (a main enclosure) and Ninomaru (second bailey), as well as the extensions that included Nishinomaru (west compartment), Sannomaru (third bailey), Fukiage and Kitanomaru (north compartment).
この時期の江戸城はこれまでの本丸・二ノ丸に、西丸・三ノ丸・吹上・北ノ丸があった。