Lotte World Tower (Korean: 롯데월드타워), is a 123-story, 555 m (1,821 ft) supertall skyscraper, located in Sincheon-dong, Songpa District, 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.

[9] 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.

Approximately 3,000 tons of steel parts, a high-precision 64t tower crane and GPS alignment systems, as well as welding technicians, were used in the construction of the roof.

The exterior of pale-coloured glass draws inspiration from Korean ceramics and features accents of metal filigree.

[22] The World Tower was completed in December 2016, and the fireworks festival was held for the first time on April 2, 2017.

The venue is in the Lotte World Tower and Seokchon Lake area and is free of charge.

The Lotte World Tower Fireworks Show was held again on May 4, 2019, and was accompanied by an eight-hour public broadcast event in collaboration with CBS Music FM.

In 2014, Lotte held a 10-day pre- opening in the second week of September, commissioning experts to diagnose the structural safety of the building and offering preview tours to the public, which was generally well received, although it was pointed out that Lotte's actions were merely a publicity stunt for the building.