There are many structures transferred from other castles in Hikone-jo Castle such as tenshu from Otsu-jo Castle, Sawaguchi Tamon-yagura (corridor-style gate acted as a stonehouse and defense post at the entrance to the second enclosure) (not existent) and Taiko-yagura Mon (Drum Tower Gate) from Sawayama-jo Castle, nishi no maru sanju yagura (three-storied tower located at the northwest corner of nishi no maru) from Odani-jo Castle and Taiko-mon Gate (Drum Gate) from Kannonji-jo Castle or not known from where.
彦根城の建築物には、大津城からの天守を始め、佐和山城から佐和口多門櫓（非現存）と太鼓櫓門、小谷城から西ノ丸三重櫓、観音寺城からや、どこのものかは不明とされているが太鼓門、等の移築伝承が多くある。