I investigated the Ryuhoin mausoleum in Eiheiji-Temple with some clue of its old drawings and its actual surveying. The summary of this study is as follows; The Ryuhoin tomb, the Keijuin tomb and the Seichiin tomb were built in due order. When the Daian-in tomb was added in 1676 (Enpou4), the mausoleum got into its fundemental form. When the Daian-in tomb was added, its gate was either moved from the Seichiin tomb, or was rebuilt. All tombs were reformed in 1778 (An-ei 7) and they were put in order and called the Ryuhoin mausoleum. The gates of Daian-in tomb and Keijuin tomb were removed, and the gate of Ryuhoin tomb was moved into its present place. In 1979 (Showa 54), the entrance to the mausoleum was demolished for the construction of a road.
