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Lotte Center Hanoi is a skyscraper in Ba Đình, Hanoi, Vietnam. Completed on 2 September 2014, the tower has 65 floors. The center features a modern architectural style designed by Callison, an American company. This tower is the third tallest building in Vietnam after Landmark 81 and the Keangnam Hanoi Landmark Tower in Cau Giay district. Lotte Center Hanoi includes offices, a 5 star hotel, a 6th floor Lotte Department Store, serviced residences, the Evian Spa, the Lotte Mart, restaurants and an observation deck.