Ōno Castle, Hill castle and museum in Ōno, Fukui Prefecture, Japan.
Ōno Castle stands prominently on Kameyama Hill approximately 300 meters east to west, featuring stone ramparts made from natural boulders and offering commanding panoramic views over the surrounding plains and historic castle town below.
Originally constructed around 1580 by Kanamori Nagachika under Oda Nobunaga's orders, the castle served as a strategic military stronghold during the Sengoku period and was later occupied by successive daimyo of the Ōno Domain throughout the Edo period.
The castle town retains sections of its old jōkamachi with traditional samurai houses and merchant houses. Two original castle gates survive as temple gates: the former Yagura-mon is now the gate of Shinjō-ji Temple in Nakachō, and the gate portion of the Hato-mon serves as the gate of Kōmyō-ji Temple.
The museum in the reconstructed keep is open 9:00–17:00 from April to September and 9:00–16:00 in October and November, and closed from December to March. Admission is ¥300 for adults and free for children up to junior high school. The keep has a museum on floors one to three and an observation deck on the fourth floor.
The keep standing on the summit is a 1968 reinforced-concrete reconstruction funded by donations from Hagiwara Sada, a former samurai; it follows old drawings and keeps of the period but places the small keep where the Tengu turret once stood, so it is not a historically accurate restoration.
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