This castle was an important military stronghold of Ōmi Province.
Niwa Nagahide held it after the ruin of the Azai clan and later, Ishida Mitsunari in the end of the 16th century.
This castle was attacked by Kobayakawa Hideaki after the Battle of Sekigahara.
At present, the only indication of this old history is a sign reading "The Site of Sawayama Castle.
"[2] There is also a hiking course that leads to the summit of Mount Sawayama, from which hikers see a panoramic view that includes Hikone Castle and Lake Biwa.