Lotte World Tower

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Lotte World Tower 롯데월드타워
The tower in 2019
Former names	Two Lotte World Tower Lotte World Premium Tower
Alternative names	Lotte Jamsil Super Tower
Record height
Tallest in the OECD countries since 2017[I]
Preceded by	One World Trade Center
General information
Status	Completed
Type	Observation, office, hotel, residential, retail
Location	(Sincheon-dong) 300 Olympic-ro, Songpa-gu, Seoul, South Korea
Coordinates	37°30′45″N 127°06′10″E / 37.51250°N 127.10278°E / 37.51250; 127.10278
Groundbreaking	May 2009[1]
Construction started	January 22, 2010
Completed	December 22, 2016
Opening	April 3, 2017; 7 years ago (April 3, 2017)
Height
Architectural	555 m (1,821 ft)
Top floor	486 m (1,594 ft)
Technical details
Floor count	123 and 6 below ground
Floor area	304,081 m2 (3,273,100 sq ft)
Lifts/elevators	61
Design and construction
Architect(s)	Kohn Pedersen Fox
Developer	Lotte Engineering & Construction
Engineer	Syska Hennessy Group (MEP)[2]
Structural engineer	Leslie E. Robertson Associates[3]
Website
www.lwt.co.kr

Lotte World Tower (Korean: 롯데월드타워), is a 123-story, 555 m (1,821 ft) supertall skyscraper, located in Sincheon-dong, Songpa-gu, Seoul, South Korea. It is the sixth-tallest building in the world, the tallest in OECD countries, and also the first in South Korea to be over 100 stories tall.

It was the fourth-tallest in the world when completed in 2016. The tower opened to the public on April 3.^[4] Haeundae LCT The Sharp in Busan is the second-tallest building in the country.^{[citation needed]}

A "Sky Bridge Tour" is located on the roof of Lotte World Tower at 541 m (1,775 ft),^[5] which is the total height of One World Trade Center in New York City, the tallest building in the United States.