Nirengi Castle

Nirengi Castle - Credit: Wikimedia Commons

was a Japanese castle in what is now the city of Toyohashi, Aichi Prefecture, during the Sengoku period. There are no extant structures left; however, a park was built on the site where the castle once stood, and a stone monument and some explanatory signboards were erected by the city. Read more on Wikipedia

type: military structure
date from: 1493

Source: en.wikipedia.org