The Saemangeum Seawall, located on the southwest coast of the Korean peninsula, is the world's longest man-made dyke, measuring . It runs between two headlands, and separates the Yellow Sea and the former Saemangeum estuary. In 1991, the South Korean government announced that a dyke would be constructed to link three headlands just south of the South Korean industrial port city of Gunsan, southwest of Seoul, to create of farmland and a freshwater reservoir. Since then, the government has spent nearly 2 trillion won ( billion USD) on construction of the dyke, with another 220 billion won ( million USD) budgeted on strengthening the dyke and a further 1.31 trillion won ( billion USD) to transform the tidal flats into arable land and the reservoir. The average width of the sea wall/earth dam is (it is at its widest) and the average height is ( at its highest). The construction of the Saemangeum Seawall has caused controversy from the moment it was announced as environmental groups protested against the impact of the dyke on the local environment. Supreme Court challenges in 1999 and 2005 led to temporary production stoppages but ultimately failed to stop the project. Major construction was completed in April 2006, with the seawall longer than the Afsluitdijk in the IJsselmeer, the Netherlands, previously the longest seawall-dyke in the world. With remaining minor construction and inspection finished, the seawall was officially open to the public on 27 April 2010. Then South Korean president Lee Myung Bak commented that Saemangeum would be "the kernel and the gateway of South Korea's west coast industrial belt", and is "another effort by us for low-carbon and green growth, along with the four-rivers project". A ceremony was held in Saemangeum the same day, with cabinet officials, politicians, and delegates from other countries. A floating solar PV plant of 2.1 GW capacity is planned using the coastal reservoir area of the Saemangeum Seawall. Composition The road on Saemangeum Seawall with the length of 33 km, connects Buan County to Gunsan is a part of National Route 77. IS: Intersection, IC: Interchange See also Saemangeum Sihwa Lake Tidal Power Station Environment of South Korea The Four Major Rivers Restoration Project Kalpasar Project References "Saemangum seawall completed", The Korea Herald, 22 April 2006, Seoul. Google Earth view Google Maps view Article in New York Review of Books Mentions Saemangeum Seawall as prime example of bird habitat