Built in 1579 by famous warlord Oda Nobunaga, Azuchi Castle was unique for its opulence and octagonal castle tower. Japan's Azuchi-Momoyama Period (1568–1600) is partially named after this castle.

The castle was attacked and destroyed only 3 years later. The castle is on a hill in Azuchi, Omi-Hachiman, Shiga Prefecture. A replica of the top portion of the castle tower is displayed at a museum nearby the castle ruins. Photo shows the Azuchi Castle marker at the foot of the castle hill.