The very height of luxury, the Lotte Signiel opened in April 2017 in one of the world’s tallest buildings, the 1,821-foot Lotte World Tower. Sleek and minimalist rooms feature panoramic views of Seoul and the Gangnam neighborhood, Diptyque bath amenities, and access to a gym, a swimming pool, and an exclusive guest lounge and library. Enjoy French haute cuisine and decadent desserts at multiple-Michelin-starred chef Yannick Alléno's Stay restaurant; contemporary Korean at Bicena; and the largest champagne bar in Korea—all on the 81st floor. The Evian Spa focuses on hydrotherapy and immersion water treatments, and an ice fountain brings down body temperatures after a visit to the wet or dry sauna. Should you want to leave the lantern-topped tower, Lotte World amusement park and tranquil Songpa Naru Park are steps away.