The sogamae of Odawara Castle, stronghold of the Late Hojo clan, is extremely large with the castle town surrounded by an approximately 9km long dry moat and an embankment.
後北条氏の拠点、小田原城の総構えは2里半（約9km）に及ぶ空堀と土塁で城下町全体を囲む長大なものであった。