Taipei 101 is an iconic skyscraper located in the city of Taipei, in Taiwan. It rises to 509 meters and consist of exactly 101 floors. At the time of its construction in 2004, it was the tallest building in the world.
Taipei 101 is prone to earthquakes and fierce winds common in its area of the Asia-Pacific. The engineers had to design a structure that could withstand gale winds up to 216 km/h and the strongest earthquakes. To achieve stability and lessen the impact of violent motion, a gigantic tuned mass damper was designed. The engineers were so proud of their creation that they made the damper publicly visible from an indoor observatory located inside the tower, where recorded voice tours and informative displays explain to visitors how the thing works.