Okayama Castle

Overview

Okayama Castle (岡山城, Okayama-jō) is a Japanese castle in Kita-ku, Okayama, in Okayama Prefecture. Its site lies at 34.6653° N, 133.9361° E, in the Marunouchi district of the city. The castle was founded in 1346, the first year of the Shōhei era, placing its origins in the Muromachi period (1336–1573). It is counted among the 100 Fine Castles of Japan, a list maintained by the Japanese Castle Foundation. The castle's surviving structures include the Okayama Castle Keep Tower, and the site is closely associated with the Okayama Domain, which had its headquarters there.

History

The castle's origins date to 1346, when construction began during the Muromachi period. That era, spanning 1336 to 1573, saw the rise of warrior-governed castles across Japan, and Okayama Castle was established as one of them. The site's later prominence came under the Ukita and Ikeda families, who shaped the castle into the form it is known for today.

Ukita Naoie (宇喜多直家) is recorded as having died at the castle, and the Ikeda family's connection is equally direct: Ikeda Mitsumasa (池田光政) was born at Okayama Castle and also died there. The castle served as the headquarters of the Okayama Domain (岡山藩, Okayama-han), the feudal territory administered from this site.

The main keep was completed in 1597, at the end of the Sengoku period. Before the Battle of Sekigahara in 1600, the keep's roof tiles were gilded, a display of wealth and authority that earned the castle the nickname Golden Crow Castle (金烏城, Kin U-jō). After Sekigahara, the gilding was reduced; today only a few parts of the roof, including the fish-shaped gargoyles, retain gold.

The castle was destroyed in 1945, during the bombing of Okayama in the final months of the Second World War. Two of its watch towers survived that bombing and are now listed by the national Agency for Cultural Affairs as Important Cultural Properties. The main keep was reconstructed in concrete in 1966, restoring the castle's silhouette to the city skyline.

What Stands There Today

The present keep is a concrete reconstruction completed in 1966, standing on the original stone foundations. It houses exhibits and an observation area, and its exterior reproduces the black-walled appearance for which the castle is known. The two surviving watch towers, which escaped the 1945 bombing, are the castle's most historically significant extant structures and are designated Important Cultural Properties by the Agency for Cultural Affairs.

The castle grounds sit in Marunouchi, in the Kita-ku ward of Okayama city, at coordinates 34.6653° N, 133.9361° E. The site is included in the 100 Fine Castles of Japan, a selection that recognises castles of particular historical and cultural value. The keep tower itself is the castle's central structure and the focal point of the reconstructed complex.

The Name in Japanese

The castle's name in Japanese is 岡山城. Its reading in kana is おかやまじょう, and its romaji is Okayama-jō.

Broken down character by character:

• 岡 — read oka in this word. It means "hill" or "ridge." It is the first element of the place name Okayama.
• 山 — read yama in this word. It means "mountain." Together, 岡山 (Okayama) means "hill-mountain," a name that describes the terrain of the area.
• 城 — read jō in this word. It means "castle." This is the standard kanji for a Japanese castle, and it appears in castle names across the country, such as 姫路城 (Himeji-jō) and 松本城 (Matsumoto-jō).

A note on the reading of 城: in isolation the character is read shiro, but when attached to a place name it typically becomes jō, as here. The full name 岡山城 therefore means "the castle of Okayama."

The castle also carries two nicknames. Because of its black exterior, it is called 烏城 (U-jō), meaning "Crow Castle" — 烏 (u) being an old word for crow or black bird. Before the Battle of Sekigahara, when the keep's roof tiles were gilded, it was called 金烏城 (Kin U-jō), "Golden Crow Castle," with 金 (kin) meaning "gold." The neighbouring Himeji Castle, by contrast, is white and known as the "Egret Castle," so the two are often described as a pair of opposites. Matsumoto Castle in Nagano is also nicknamed "Crow Castle," but in Japanese it is called 烏城 (karasu-jō), using the more common reading karasu for crow.

Visiting and Context

Okayama Castle stands in central Okayama city, in the Kita-ku ward, and is reachable from Okayama Station by tram or on foot. The reconstructed keep, the two surviving watch towers, and the surrounding park make up the visitable area. The castle is one of the 100 Fine Castles of Japan, a designation that guides many travellers' itineraries.

The castle's history is bound up with the Okayama Domain and the Ikeda family, whose members were born and died within its walls. Ikeda Mitsumasa, born and buried at the castle, is the most prominent figure linked to the site. Ukita Naoie, an earlier lord, also died there. For readers studying Japanese, the castle's name offers a clean example of how 城 shifts from shiro to jō in compound place names, and how nicknames like 烏城 and 金烏城 build on the same character.