Kagamiyama Castle

Kagamiyama Castle - Credit: Wikimedia Commons

was a yamajiro-style Japanese castle located in what is today part of the city of Higashihiroshima in Hiroshima Prefecture. Its ruins have been protected by the central government as a National Historic Site since 1957. Read more on Wikipedia

type: military installation
date from: Nanboku-chō period

Source: en.wikipedia.org