Castles of Akechi Mitsuhide

This castle was built by Akechi Mitsuhide, a military commander who served Oda Nobunaga, on the shores of Lake Biwa, on the east side of Mount Hiei. Although almost nothing remains of it today, it was said to have been a magnificent castle that was second only to Azuchi Castle at the time. Akechi Mitsuhide became the lord of Sakamoto Castle in recognition of his work in the burning of Mount Hiei (1571), in which Nobunaga was in conflict with the monks of Mount Hiei and burned down the buildings of Enryakuji Temple. At the time, Sakamoto was a key transportation hub that flourished as a port town for transporting goods to Kyoto. Mitsuhide used Sakamoto Castle as a base to pacify Omi. Together, they worked toward Nobunaga's unification of the country.

Basic infomation : https://www.the-kansai-guide.com/en/directory/item/22284/

Following the burning of Mount Hiei, Oda Nobunaga destroyed the Takeda clan in Kai (Yamanashi Prefecture) and banished Shogun Yoshiaki of the Muromachi Shogunate from Kyoto, expanding his power one after another. Mitsuhide was next ordered to capture Tamba (Kyoto Prefecture and Hyogo Prefecture). It took Akechi Mitsuhide about five years to pacify Tamba, a mountainous region divided between local lords. In 1580, he was granted the entire province of Tamba, giving him a fief of 340,000 koku. He renovated Yokoyama Castle, which was located here, and renamed it Fukuchiyama Castle. The current castle tower was rebuilt in the Showa era, but the stone walls from Mitsuhide's time still remain.

Basic information:https://www.the-kansai-guide.com/en/directory/item/11866/