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Fukuoka Tower (福岡タワー Fukuoka Tawā?) is a 234-metre (768 ft) tall tower located in the Momochihama area of Fukuoka, Japan. It is the tallest seaside tower in Japan. Fukuoka Tower was finished in 1989, taking a total of 14 months to build at a cost of ¥6,000,000,000 (roughly US $50,000,000 in 2015 terms). It was designed by Nikken Sekkei. It was built on reclaimed land out of Hakata Bay.
Fukuoka Tower has three observation decks: one at 116 m, a café/lounge deck at 120 m, and the highest at 123 metres above the ground. The tower also has a triangular cross-section which is covered with 8000 half-mirrors. Because of this, it has been given the nickname "Mirror Sail". The underground weight of Fukuoka Tower is 25,000 tons. Its weight above ground, by contrast, is only 3,500 tons.
The tower is designed to withstand magnitude 7 earthquakes and winds of a speed up to 65 m/s. The strongest recorded earthquake in the area has been magnitude 6, and the strongest winds 49 m/s. The tower is located at 2-3-26 Momochihama, Sawara-ku, Fukuoka.