Seawater Land was created as a 24-hour all-weather sauna building that spouts seawater and fresh water on the beach in Yongdam-dong, Jeju-si, Jeju Island, a famous natural tourist destination. Yongduam Seawater Land boasts as Jeju's largest luxury product with a tourist attraction that combines Yongduam Rock, a world-renowned specialty of strangely shaped rocks, and the natural scenery of the clean coast. Haesu Land, which exudes a tropical atmosphere and is landscaped with palm trees, has a total land area of ​​7,425㎡, 3 above-ground floors and 1 underground floor, a sauna facility of 3,960㎡, a traditional hot tub in a 1,650㎡ garden, a large waterfall, and an event plaza. It is a large bathing establishment with a paradise rest area, parking spaces for about 120 cars, and parking for about 50 cars. Nowadays, bathing is not just a physiological solution such as washing the body or removing dirt, but is becoming a place of the so-called Well-Bing concept, a social and cultural leisure space where people can enjoy the vitality of life through relaxation, enjoyment, and health. Accordingly, Yongduam Seawater Land provides facilities for relaxation, fun, and health, and a full-stop entertainment program such as green tea bath, sauna, jjimjilbang, sports, skin aroma, and outdoor sweat bath.