Lotte World Tower

The Lotte World Tower (Korean롯데월드타워) is a 555-metre (1,821 ft) 123-story Megatall skyscraper located in Sincheon-dong, Songpa, Seoul, South Korea. It opened to the public on April 3, 2017, and is currently the tallest building in South Korea and the sixth tallest in the world.

Lotte World Tower
Lotte World Tower 2019.jpg
The Lotte World Tower in 2019.
Former names
  • Two Lotte World Tower
  • Lotte World Premium Tower
Alternative namesLotte Jamsil Super Tower
Record height
Tallest in the OECD countries since 2017[I]
Preceded byOne World Trade Center
General information
TypeOffice, Hotel, Residential, retail
LocationSincheon-dong, Songpa, Seoul, South Korea
Coordinates37°30′45″N 127°06′10″E / 37.51250°N 127.10278°E / 37.51250; 127.10278Coordinates: 37°30′45″N 127°06′10″E / 37.51250°N 127.10278°E / 37.51250; 127.10278
GroundbreakingMay 2009[1]
Construction startedJanuary 22, 2010
CompletedDecember 22, 2016
OpeningApril 3, 2017
Tip610.7 metres (2,004 ft)
Top floor610 metres (2,000 ft)
Observatory555 metres (1,821 ft)
Technical details
Floor count123 above ground, 6 below ground
Floor area304,081 m2 (3,273,100 sq ft)
Design and construction
Architect(s)Kohn Pedersen Fox
DeveloperLotte Engineering & Construction
EngineerSyska Hennessy Group (MEP)[2]
Structural engineerLeslie E. Robertson Associates[3]


After 13 years of planning and site preparation,[4] the tower gained final approval to start construction by the government in November 2010[4] and the first groundbreaking activities of piling and frame assembly were observed at the construction site in March.

On New Year Eve of 2016, the LED-pixels of the facade displayed the number "2016".[5]

On April 3, 2017, Lotte shot off fireworks to celebrate the tower's official opening.[6] On January 1, 2018, Lotte shot off fireworks with a LED laser show for seven minutes to celebrate New Year's Day and the 2018 PyeongChang Winter Olympics.



On March 17, 2016, before the final phase of external construction, the Diagrid lantern-shaped roof structure was completed. The roof structure was constructed with steel counterparts that are each 12 metres (39 ft) and weigh 20 tons. The counterparts were made up of bent metal panels that are 6 cm (2.4 in) thick. The roof structure itself is 120 metres (390 ft) high and covers floors 107–123. Approximately 3,000 tons of steel parts, a high-precision 64t tower crane and GPS alignment systems, as well as highly skilled welding technicians, were used in the construction of the roof. The roof structure is engineered to withstand its weight without reinforcing pillars, endure earthquakes up to a magnitude of 9 under the Richter magnitude scale, and winds up to 80 m/s (260 ft/s). It is also the fifth largest building in the world [7]


Lotte World Tower is a landmark of Seoul and the first 100-story building in Korea. When it was completed, it was the fourth-highest tower in the world and the highest in the OECD countries. The conceptual design calls for a slender cone with convex, gently curved sides. An exterior of pale-coloured glass draws inspiration from Korean ceramics and features accents of metal filigree.[8]

Floor plansEdit

Main facilitiesEdit

Seoul Sky is located on the 117th – 123rd floors. The 117th floor is the entrance floor and the view floor; the 118th floor has the Sky Friendly Cafe and Sky Terrace. The Photozone is located on the 119th floor, Seoul Sky Cafe on the 122nd floor, and the 123 lounge, a premium lounge bar, on the 123rd floor. There are four media stands on the 117th and 118th floors. The view floor has prominent views of the city, as well as a glass floor and a telescope. The skylight of Seoul Sky was the highest glass floor observatory as of the tower's completion. Lotte Tower and One World Trade Center have concluded an operation and technical service agreement.[9][10]

Floors Use
117th–123rd Observation deck (SEOUL SKY)
105th–114th Private office
76th–101st Lotte Hotel (SIGNIEL SEOUL)
42nd–71st Residence (SIGNIEL RESIDENCES)
14th–38th Prime office
5th–12th Podium
1st–2nd Lobby
B1–B2 Observation entrance
B3–B6 Parking lot

Incidents and accidentsEdit

Safety issuesEdit

In 2013 and 2014, three construction workers died during the construction of the tower, and an executive director of Lotte's construction arm was given a suspended sentence of eight months in prison in 2016 for his role in neglecting safety measures at the site.[11] In December 2014, the Seoul city government ordered the mall and cinema complex at the base of the tower, which opened before completion of the tower, to be closed for five months after water was found leaking from an internal aquarium. Independent engineers who assessed the building found that these issues bore little relation to the overall structural integrity of the building and the mall and cinema complex reopened in 2015.[12]

Urban explorationEdit

In 2016, two Russian and Ukrainian urban explorers, Vadim Makhorov and Vitaly Raskalov from Ontheroofs, illegally climbed the under-construction Lotte World Tower through stairs and Vitaly Raskalov then free-climbed up the crane on the tower's top.[13][14] The video was viewed over 3 million times as of September 2016 and received worldwide media attention.[15][16] Following the climb, Lotte World Tower released posters with the photos of Vitaly Raskalov and Vadim Makhorov and banned them from the building.[17][18]


See alsoEdit


  1. ^ "Lotte World Tower". CTBUH Skyscraper Center. Retrieved 4 August 2017.
  2. ^ "Lotte World Tower - the Skyscraper Center".
  3. ^ Editors. (April 20, 2016), "Korea's Tallest Tower Embodies Industrial Malaise" The Chosun Ilbo
  4. ^ a b "Lotte World 2 Gains Final Approval".
  5. ^ "Das frohe Neue Jahr kann kommen! I'm südkoreanischen Seoul wurde bereits die LED-Schrift Auf dem Lotte World Premium Tower getestet." Picture of LED-lit facade tested with the vertical display of "2016" (viewed from the north). Kronen Zeitung (Print), Vienna, December 31st, 2015, p 14. (German)
  6. ^ FOX. "WATCH: Fireworks at the grand opening of the Lotte World Tower". Archived from the original on 2017-04-06. Retrieved 2017-04-03.
  7. ^ Jung, Wooyoung (17 March 2016). "롯데월드타워 555m 달성". Yonhap News (in Korean). Retrieved March 20, 2016.
  8. ^ "KPF Pen 555m Tall Korean Tower - Article #2338".
  9. ^ "Lotte World Tower - skyscraper". Retrieved March 20, 2017.
  10. ^ "555m Seoul Sky · 541m won World Trade Center". 20 August 2017. Retrieved 2017-09-02.
  11. ^ Herald, The Korea (2016-01-21). "Lotte executive gets suspended jail sentence in construction worker's death". Retrieved 2019-10-03.
  12. ^ Sang-Hun, Choe (2015-07-14). "Lotte World Tower Rises, and Leery Koreans Watch". The New York Times. ISSN 0362-4331. Retrieved 2019-10-03.
  13. ^ "Climbing Lotte World Tower (555 meters) youtube video". Ontheroofs. 10 April 2016. Archived from the original on 2021-12-20.
  14. ^ "Climbing Lotte World Tower ontheroofs story with photos and video". Ontheroofs. 10 April 2016. Archived from the original on September 27, 2016.
  15. ^ Ryall, Julian (31 March 2016). "Daredevils evade security to climb 1,820-foot tower in South Korea". The Telegraph. Archived from the original on October 9, 2016.
  16. ^ "[Interview] Vitaliy Raskalov on his Lotte World Tower climb". The Korea Herald. 12 April 2016. Archived from the original on October 8, 2016.
  17. ^ "Ukrainian Daredevil Scales Seoul's Lotte World Tower". Haps Magazine. 30 March 2016. Archived from the original on November 4, 2016.
  18. ^ "Daredevil climber beats security, tops Lotte World Tower". The Korea Times. 30 March 2016.

External linksEdit

  Media related to Lotte World Tower at Wikimedia Commons