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designated city in Osaka Prefecture, Japan
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Osaka (大阪市, Ōsaka-shi; [ò̞ó̞.sä́.kä́(.ɕì), ó̞ó̞-] ⓘ) is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third-most populous city proper in Japan, following the special wards of Tokyo and Yokohama. With an estimated population of 2.8 million as of October 1, 2025 and a population density of about 12,505 people per square kilometer, it is the largest component of the Keihanshin metropolitan area, the second-largest metropolitan area in Japan and the 10th-largest urban area in the world with more than 19 million inhabitants.
Osaka was traditionally considered Japan's economic hub. By the Kofun period (300–538) it had developed into an important regional port, and in the seventh and eighth centuries it served briefly as the imperial capital. Osaka continued to flourish during the Edo period (1603–1867) and became known as a center of Japanese culture. Following the Meiji Restoration, it greatly expanded in size and underwent rapid industrialization. This accelerated population growth throughout the following decades, and Osaka was the industrial hub in the Meiji and Taishō eras. It made contributions to redevelopment, urban planning and zoning standards in the postwar period, and developed rapidly as one of the major financial centers in the Keihanshin Metropolitan Area.
Osaka is a major financial center of Japan and is recognized as one of its most multicultural and cosmopolitan cities. It is home to the Osaka Exchange and the headquarters of multinational electronics corporations such as Panasonic and Sharp. Osaka is an international center of research and development and is represented by several major universities, including Osaka University, Osaka Metropolitan University, and Kansai University. Landmarks include Osaka Castle, Osaka Aquarium Kaiyukan, Dōtonbori, Tsūtenkaku in Shinsekai, Tennōji Park, Abeno Harukas, Sumiyoshi Taisha Grand Shrine, and Shitennō-ji, one of the oldest Buddhist temples in Japan.
Ōsaka means 'large hill' or 'large slope'. It is unclear when this name gained prominence over Naniwa, but the oldest written evidence for the name dates back to 1496.
By the Edo period, 大坂 (Ōsaka) and 大阪 (Ōsaka) were mixed use, and the writer Hamamatsu Utakuni, in his book Setsuyo Ochiboshu published in 1808, states that the kanji 坂 was abhorred because it means 'returns to the earth,' and thus 阪 was used. The kanji 土 ('earth') is also similar to the word 士 ('knight'), and 反 means 'against,' so 坂 can be understood as 'samurai rebellion'. 阪 became the official name in 1868 after the Meiji Restoration. The older kanji (坂) is still in very limited use, usually only in historical contexts. When used as an abbreviation, the modern kanji 阪 (han) refers to Osaka City or Osaka Prefecture.
During the Jōmon period (7,000 BCE), present-day Osaka was mostly submerged, and the Uemachi Plateau (上町台地, Uemachi Daichi) formed a 12 km (7.5 mi) long and 2.5 km (1.6 mi) wide peninsula separating Kawachi Bay from the Seto Inland Sea. It is considered one of the first places where inhabitants of Japan settled, both for the favorable geological conditions, rich in fresh water and lush vegetation, and because its position was defensible against military attack.
The earliest evidence of settlements in the Osaka area are the Morinomiya ruins (森ノ宮遺跡, Morinomiya iseki) which is located in the central Chuo-ku district. Buried human skeletons and a kaizuka (a mound containing remains) were found, as well as shell mounds, oysters, and other interesting archeological discoveries from the Jomon period. In addition to the remains of consumed food, there were arrow heads, stone tools, fishing hooks and crockery with remains from rice processing. It is estimated that the ruins contain 2,000-year-old debris between the Jomon and Yayoi period. The findings of the archeological sites are exhibited in an adjacent building.
In the years between the end of the Jōmon period and the beginning of the Yayoi period, the sediments that were deposited north of the Uemachi peninsula / plateau transformed Kawachi Bay into a lagoon. During the Yayoi period (300 BCE – 250 CE), permanent habitation on the plains grew as rice farming became popular.
At the beginning of the third century CE the grand shrine of Sumiyoshi-taisha was inaugurated near the harbor, commissioned by consort Empress Jingū. This Shinto shrine structure survived historical events, which inaugurated a new style in the construction of Shinto shrines, called Sumiyoshi-zukuri. The maritime panorama enjoyed from the shrine gardens inspired several artists, and nowadays the representations of that type of landscape are called Sumiyoshi drawings.
Towards the end of the Yayoi period the Uemachi plateau-peninsula expanded further, transforming the Kawachi Lagoon into a lake (河内湖) connected to the mouth of the Yodo River, which had widened to the south.
By the Kofun period, Osaka developed into a hub port connecting the region to the western part of Japan. The port of Naniwa-tsu was established and became the most important in Japan. Trade with other areas of the country and the Asian continent intensified. The large numbers of increasingly larger keyhole-shaped Kofun mounds found in the plains of Osaka are evidence of political-power concentration, leading to the formation of a state. The findings in the neighboring plains, including the mausoleum of Emperor Nintoku was discovered nearby in Sakai testify to the status of imperial city that Osaka had reached. Four of these mounds can be seen in Osaka, in which important members of the nobility are buried. They are located in the southern districts of the city and date back to the 5th century. A group of megalithic tombs called Mozu Tombs are located in Sakai, Osaka Prefecture.
Important works of the Kofun period is the excavation that diverted the course of the Yamato River, whose floods caused extensive damage, and the construction of important roads in the direction of Sakai and Nara. Maritime traffic connected to the port of Naniwa-tsu increased in such a way that huge warehouses were built to stow material arriving and departing.
The Kojiki records that during 390–430 CE, there was an imperial palace located at Osumi, in what is present day Higashiyodogawa ward, but it may have been a secondary imperial residence rather than a capital.
In 645, Emperor Kōtoku built his Naniwa Nagara-Toyosaki Palace in what is now Osaka, making it the capital of Japan. The city now known as Osaka was at this time referred to as Naniwa (written as 浪華 or 浪花) and this name and derivations of it are still in use for districts in central Osaka such as Naniwa (浪速) and Namba (難波). Although the capital was moved to Asuka (in Nara Prefecture today) in 655, Naniwa remained a vital connection, by land and sea, between Yamato (modern day Nara Prefecture), Korea, and China.
Naniwa was declared the capital again in 744 by order of Emperor Shōmu, and remained so until 745, when the Imperial Court moved back to Heijō-kyō (now Nara). By the end of the Nara period, Naniwa's seaport roles had been gradually taken over by neighboring areas, but it remained a lively center of river, channel, and land transportation between Heian-kyō (Kyoto today) and other destinations. Sumiyoshi Taisha Grand Shrine was founded by Tamomi no Sukune in 211 CE. Shitennō-ji was first built in 593 CE and is the oldest Buddhist temple in Japan.
In 1496, Jōdo Shinshū Buddhists established their headquarters in the heavily fortified Ishiyama Hongan-ji, located directly on the site of the old Naniwa Imperial Palace. Oda Nobunaga began a decade-long siege campaign on the temple in 1570 which ultimately resulted in the surrender of the monks and subsequent razing of the temple. Toyotomi Hideyoshi constructed Osaka Castle in its place in 1583. Osaka Castle played a pivotal role in the Siege of Osaka (1614–1615).
Osaka was long considered Japan's primary economic center, with a large percentage of the population belonging to the merchant class (see Four divisions of society). Over the course of the Edo period (1603–1867), Osaka grew into one of Japan's major cities and returned to its ancient role as a lively and important port. Daimyōs (feudal lords) received most of their income in the form of rice. Merchants in Osaka thus began to organize storehouses where they would store a daimyō's rice in exchange for a fee, trading it for either coin or a form of receipt; essentially a precursor to paper money. Many if not all of these rice brokers also made loans, and would actually become quite wealthy and powerful. Osaka merchants coalesced their shops around Dōjima, where the Rice Exchange was established in 1697 and where the world's first futures market would come to exist to sell rice that was not yet harvested.
The popular culture of Osaka was closely related to ukiyo-e depictions of life in Edo. By 1780, Osaka had cultivated a vibrant arts culture, as typified by its famous Kabuki and Bunraku theaters. In 1837, Ōshio Heihachirō, a low-ranking samurai, led a peasant insurrection in response to the city's unwillingness to support the many poor and suffering families in the area. Approximately one-quarter of the city was razed before shogunal officials put down the rebellion, after which Ōshio killed himself. Osaka was opened to foreign trade by the government of the Bakufu at the same time as Hyogo Town (modern Kobe) on January 1, 1868, just before the advent of the Boshin War and the Meiji Restoration. The Kawaguchi foreign settlement, now the Kawaguchi subdistrict, is a legacy of the foreign presence in Osaka.
Osaka residents were stereotyped in Edo literature from at least the 18th century. Jippensha Ikku in 1802 depicted Osakans as stingy almost beyond belief. In 1809, the derogatory term "Kamigata zeeroku" was used by Edo residents to characterize inhabitants of the Osaka region in terms of calculation, shrewdness, lack of civic spirit, and the vulgarity of Osaka dialect. Edo writers aspired to samurai culture, and saw themselves as poor but generous, chaste, and public spirited. Edo writers by contrast saw "zeeroku" as obsequious apprentices, stingy, greedy, gluttonous, and lewd. To some degree, Osaka residents are still stigmatized by Tokyo observers in the same way today, especially in terms of gluttony, evidenced in the phrase, "Residents of Osaka devour their food until they collapse" (大阪は食倒れ, "Ōsaka wa kuidaore").
With the enormous changes that characterized the country after the Meiji Restoration (1868), and the relocation of the capital from Kyoto to Tokyo, Osaka entered a period of decline. From being the capital of the economy and finance, it became a predominantly industrial center. The modern municipality was established in 1889 by government ordinance, with an initial area of 15 square kilometers (6 sq mi), overlapping today's Chuo and Nishi wards. Later, the city went through three major expansions to reach its current size of 223 square kilometers (86 sq mi). Osaka was the industrial center most clearly defined in the development of capitalism in Japan. It became known as the "Manchester and Melbourne of the Orient". In 1925, it was the largest and most populous city in Japan and the sixth largest in the world.
The rapid industrialization attracted many Asian immigrants (Indians, Chinese, and Koreans), who set up a life apart for themselves. The political system was pluralistic, with a strong emphasis on promoting industrialization and modernization. Literacy was high and the educational system expanded rapidly, producing a middle class with a taste for literature and a willingness to support the arts. In 1927, General Motors operated a factory called Osaka Assembly until 1941, manufacturing Chevrolet, Cadillac, Pontiac, Oldsmobile, and Buick vehicles, operated and staffed by Japanese workers and managers. In the nearby city of Ikeda in Osaka Prefecture is the headquarters of Daihatsu, one of Japan's oldest automobile manufacturers.
Like its European and American counterparts, Osaka displayed slums, unemployment, and poverty. In Japan it was here that municipal government first introduced a comprehensive system of poverty relief, copied in part from British models. Osaka policymakers stressed the importance of family formation and mutual assistance as the best way to combat poverty. This minimized the cost of welfare programs.
During World War II, Osaka came under air raids in 1945 by the United States Army Air Forces as part of the air raids on Japan. On March 13, 1945, a total of 329 Boeing B-29 Superfortress heavy bombers took part in the raid against Osaka. According to an American prisoner of war who was held in the city, the air raid took almost the entire night and destroyed 25 square miles (65 km2) of the city. The U.S. bombed the city again twice in June 1945 and again on August 14, a day before Japan's surrender.
In the decades following World War II, Osaka's reconstruction efforts and the industriousness of its residents brought the city even greater prosperity than before the war. Its population surpassed three million in the 1960s, initiating large-scale suburbanization within the prefecture, and eventually doubled to six million by the 1990s. With factories rebuilt and trade revived, Osaka rapidly developed into a major multicultural and financial center from the 1950s through the 1980s. Osaka Prefecture was chosen as the venue for the prestigious Expo '70, the first world's fair ever held in an Asian country. Since then, numerous international events have been held in Osaka, including the 1995 APEC Summit.
Text from the Wikipedia article “Osaka”, available under CC BY-SA 4.0.