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Last edited 01 Dec 2020
Lotte World Tower
Located in Seoul, South Korea, the sleek, tapered supertall tower measures 554.5 m (1,819 ft), pushing Kuala Lumpur’s Petronas Twin Towers (at 452 m) out of the Top 10 list for the first time since they were completed in 1998.
Built with the 10-storey Lotte World Mall at its base, which opened in 2014, the tower is a slender cone with gently-curved convex sides. The architects Kohn Pedersen Fox Associates used pale-coloured glass for the exterior, drawing inspiration from Korean ceramics, porcelain and calligraphy.
The 123-storey tower contains a variety of functions, including retail, offices, luxury hotel, concert hall with 2,000 seating capacity, aquarium, and cinema. It also boasts the world’s highest glass-bottomed observation deck, which visitors can walk across at 500 m (1,640 ft) above ground.
The roof structure is 120 m-high and is constructed using 12 m-high steel counterparts, each weighing 20 tons. It is resistant to earthquakes of up to 9 on the Richter scale, and wind speeds of up to 80 m/s.
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