Lotte World Tower in Seoul

Knocking One World Trade Center out of the world’s top five tallest buildings is the new Lotte World Tower, which opened to the public April 3, 2017. This 123 floor, solar powered building in Seoul, Korea has additional record breaking features: World’s highest glass-bottomed observation deck, fastest elevator, and the highest swimming pool in a building.

Set on the banks of the River Han, this mixed-use tower houses retail, offices, luxury residences, and a seven-star hotel. The top ten stories are allocated for public use and entertainment facilities. The glass-floor observation deck on the 118th floor allows visitors to experience a busy Seoul intersection from a bird’s eye view. The skyscraper also includes a massive 2,000-seat concert hall, aquarium, movie theater, and food hall. 

sources: inhabitat, wikipedia