* Image is for illustrative purposes only.Kaminoyama Castle (Kasumijo)
上山城（霞城）
Kaminoyama Castle (Kasumijo) is a historic castle in Tōhoku dating from the Built in 1441 (Kakitsu 1), whose lord was Takei Yoshitada (founder) / Mogami Yoshiaki / Toki clan.
Overview
About the Castle
Kaminoyama Castle is a hirayama-style castle located at the southern edge of the Yamagata basin at the foot of the Zao mountain range. It is said to have been built by Buei Yoshitada in Tenbun 4 (1535). After being developed as a branch castle of the Mogami clan, Mogami Yoshiaki entered the castle in Tenshō 12 (1584), playing a major role in the daimyo power of Yamagata that oversaw Shōnai, Okitama, and Murayama. Mogami Yoshiaki was the uncle of Date Masamune but was a Sengoku warlord who clashed fiercely with Masamune. In the Battle of Sekigahara in Keichō 5 (1600), he belonged to the Tokugawa Eastern Army and played an active role.
The Mogami Clan and Kaminoyama Castle
After Sekigahara, Mogami Yoshiaki became a great daimyo of 570,000 koku, but the Mogami clan lost its lands and was transferred due to internal clan strife in Genwa 8 (1622). Thereafter, multiple daimyo families succeeded each other at Kaminoyama Castle. After the Toki clan, it passed through the Kanmori clan, and in Genroku 10 (1697), the Fujii Matsudaira family was enfeoffed and served as lords of Kaminoyama domain until the end of the Edo period. Kaminoyama Castle stands on a hill overlooking the hot spring town of Kaminoyama (Kaminoyama Onsen), forming a unique environment where castle and hot spring coexist. Kaminoyama Onsen is an old hot spring that opened during the Kamakura period, and it remains in history as a place where many warriors and literati healed their wounds and restored their spirits.
Tenshu Restoration and Historical Displays
The current tenshu was restored in 1982 (Showa 57) as a three-story tower in the Tsukioka style, and the interior local museum displays the history of Kaminoyama Castle and the Mogami clan. The view of Kaminoyama city below and the Zao mountain range from the castle is beautiful throughout the four seasons, and especially in winter the combination of snow on Mt. Zao and the castle is a representative winter landscape of Yamagata. In the castle town, samurai-district streets remain, conveying the life and culture of Kaminoyama domain during the Edo period to the present day.
The Rich Nature and Culture of Kaminoyama
Kaminoyama is also known as a celebrated cherry blossom site in Yamagata, with cherry blossoms blooming splendidly centered on the castle ruins in late April. Along with Zao's ice formations (ice monsters), Kaminoyama Onsen wine, and Yamagata beef, Kaminoyama Castle is one of the important bases for Yamagata tourism.
Connection to Swords
Kaminoyama's most famous lord, Mogami Yoshiaki, was a fierce rival of Date Masamune and maintained his own sword collection as a symbol of competing regional power. The Toki clan, originally from Mino Province, brought the 'Mino-mono' swordsmithing tradition — the dominant practical blade style of the Sengoku era — to their new Kaminoyama domain. The famous warrior-hot spring culture of Kaminoyama Onsen, where generals healed wounds and renewed energy, gives the castle's sword connection a visceral quality: blades were real instruments of the battles fought before these gates. The Kaminoyama Castle Local History Museum holds associated swords and arms.
Highlights
- Reconstructed three-story tower — panoramic views of Kaminoyama Onsen and Mt. Zao
- Kaminoyama Onsen — 'Warriors' Hot Spring,' one of Tohoku's oldest spa towns
- Samurai district streets in the former castle town
- Views of the Zao mountain range from the tower
- Kaminoyama Castle Local History Museum (Mogami and Toki clan swords and arms)
- Cherry blossom festival (late April) — castle ruins sakura against snowy Zao
* Opening hours and admission fees are subject to change. Please check the official website before visiting.