Seosan (Korean pronunciation: [sʰʌ.san]) is a city in South Chungcheong Province, South Korea, with a population of roughly 175,000 according to the 2017 census. Located at the northwestern end of South Chungcheong Province, it is bounded by Dangjin City, Naepo New Town, Yesan-gun and Hongseong-gun on the east, Taean-gun and the Yellow Sea on the west, 125 km (78 mi) south of Seoul, 159 km (99 mi) northwest of Daejeon and 34 km (21 mi) northwest of Naepo New Town.
Seosan is the hub of transportation of the west coast where the Seohaean Expressway, Daejeon-Dangjin Expressway, National Highways No. 29, 32, 38 and 45 intersect.
Seosan is located along the west coast of South Korea. It shares Cheonsuman Bay, which is one of the most famous migration staging areas for birds in South Korea, with other cities. The city government built a theme park, Seosan Birdland, where you can see models of migratory birds and learn some information about them. Out of urban areas, you can visit Buddhist temples and monuments. Yeonghyeon-ri Rock-carved Buddha Triad, which was made in the Baekje Dynasty, is considered very important, because it has unusual structure.
