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In page Busan:

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Busan is located on the southeastern tip of the Korean Peninsula. It is located on the coast, which determined the development of the whole city itself. The distance from Busan to Seoul is about 314 km (195 mi). Busan borders low mountains to the north and west, and the Korea Strait to the south and east. The Nakdong River Delta is located on the west side of the city, and Geumjeongsan, the highest mountain in the city, is on the north. The Nakdong River, South Korea's longest river, flows through the west and empties into the Korea Strait. The southeastern region, called Yeongnam in Korea, encompasses both Gyeongsang Provinces and 3 metropolitan cities of Busan, Daegu and Ulsan. Ulsan lies northeast of Busan. The combined population exceeds 13 million.[citation needed]