| Karasawayama Castle | |
|---|---|
唐沢山城 | |
| Sano, Tochigi Prefecture, Japan | |
 Karasawayama Jinja, located on the site of the inner bailey | |
  Karasawayama Castle  Karasawayama Castle | |
| Coordinates | 36°21′14″N 139°36′01″E / 36.3538°N 139.6003°E |
| Type | yamashiro-style Japanese castle |
| Site information | |
| Open to the public | yes |
| Condition | ruins |
| Site history | |
| Built | 927 AD |
| Built by | Fujiwara no Hidesato |
| In use | Sengoku period |
| Demolished | 1602 |
| Battles/wars | Siege of Karasawayama Castle |
Karasawayama Castle (唐沢山城, Karasawayama-jō) was a Japanese castle originally built in the Heian period and used through the end of the Sengoku period. It was located in what is now part of the city of Sano, Tochigi Prefecture, in the northern Kantō region of Japan. The site has been protected as a National Historic Site, since 2014.[1]