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2019
- 2019.03Received a plaque of appreciation from the Korea NGO's Energy Network
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2018
- 2018.12Designated as part of "Seoul's Future Heritage" by the Seoul Metropolitan Government
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2016
- 2016.12Won the tourism award in the 2016 "Seoul City Culture Awards"
- 2016.11Won the Grand Prize in the 2016 "Korea First, World's Best Awards"
- 2016.09Ranked 1st place in Seoul's top 10 Hallyu spots by domestic and foreign tourists
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2015
- 2015.12Selected as a Cultural Tourisim Resource at the "Korea Tourism Awards" by the Ministry of Culture, Sports, and Tourism
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2012
- 2012.07Ranked Seoul¡¯s number 1 attraction by foreigners according to the survey by Seoul city
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2011
- 2011.04Opened the Observatory floor after the renewal
- 2011.01Started quantifying the concentration of fine dust in Seoul by the color of the tower light
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2010
- 2010.08Opened the restaurants, such as n.GRILL, THE BEST BURGER IN SEOUL, and THE PLACE Dining restaurants, after renewal
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2009
- 2009.07Selected as one of the 51 Seoul Design Assets
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2008
- 2008.08Won the Grand prize in the 2008 World Tower Federation (Innovation part)
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2005
- 2005.12Renamed to from Seoul Tower to N SEOUL TOWER
- 2005.04~11Design construction of the entire Seoul Tower
- 2005.04Contract of Seoul Tower renovation between YTN and CJ
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2001
- 2001.04 20 million visitors
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2000
- 2000.04YTN took over Seoul Tower and innovated the facilities
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1969~1999
- 1991.11SBS-TV emission release
- 1990.05Breakthrough 10 million visitors
- 1989.02Member of the World Federation of Great Towers
- 1980.10Opening of Seoul Tower (opening to the public)
- 1975.07Completion of the Observatory
- 1972.08KBS-TV emission release
- 1972.04MBC-TV emission release
- 1971.11Completion of TV antenna attachment construction
- 1971.10Completion of aerial wire steel tower
- 1971.08Completion of concrete tower body
- 1969.12Start of construction