Shōbōji Sansō

Shōbōji Sansō - Credit: Wikimedia Commons

The was a Sengoku period Japanese castle located in what is now part of the city of Kameyama, Mie Prefecture, in the Kansai region of Japan. Its ruins has been protected as a National Historic Site since 1981. Read more on Wikipedia

type: military installation
date from: 1504

Source: en.wikipedia.org