The castles in Top 100 Japanese Castles or 100 Fine Castles of Japan were chosen based on their significance in culture, history, and in their regions by the Japanese Castle Association in 2006.

Kasugayama Castle is a Sengoku period yamashiro-style Japanese castle located in the Nakayashiki neighborhood of the city of Jōetsu, Niigata prefecture. It was the primary fortress of the warlord Uesu