Sanada Maru
| Sanada Maru 真田丸 | |
|---|---|
| southeast corner Osaka Castle, Japan | |
"Syokoku kojō no zu - Sanada Maru", map of the Sanada Maru. Collection of the Hiroshima City Central Library. | |
| Site information | |
| Condition | destroyed |
| Location | |
| Coordinates | 34°40′23″N 135°31′44″E / 34.673026°N 135.528767°E |
| Site history | |
| Built by | Sanada Yukimura |
| Events | Siege of Osaka |
The Sanada Maru (真田丸 （さなだまる）, Sanada Maru) was a small fortification attached to Osaka castle. It is famous for being impregnable and playing a key role in defending the castle in the winter of 1615. Later, it was forcefully destroyed despite being exempt from the reconciliation condition.