Samsung Group is a South Korean multinational conglomerate company headquartered in Samsung Town, Seoul. It comprises numerous subsidiaries and affiliated businesses, most of them united under the Samsung brand, and is the largest South Korean chaebol.
Notable Samsung industrial subsidiaries include Samsung Electronics (the world's largest information technology company measured by 2011 revenues), Samsung Heavy Industries (the world's second-largest shipbuilder measured by 2010 revenues), and Samsung Engineering and Samsung C&T (respectively the world's 35th- and 72nd-largest construction companies).
Other notable subsidiaries include Samsung Life Insurance (the world's 14th-largest insurance company), Samsung Everland (the oldest theme park in South Korea) and Cheil Worldwide (the world's 19th-largest advertising agency measured by 2010 revenues).
Samsung produces around a fifth of South Korea's total exports and its revenues are larger than many countries' GDP; in 2006, it would have been the world's 35th-largest economy. The company has a powerful influence on South Korea's economic development, politics, media and culture, and has been a major driving force behind the "Miracle on the Han River".