Currently it is the world tallest building reaching a height of 508m from ground to pinnacle. Its' features make it a unique structure, often labeled one of the wonders of the modern world. The world biggest Tuned Mass Damper, outriggers, supercolumns, high-strength concrete and steel, moment resisting frame and well optimized aerodynamic shape are the key structural elements that made Taipei 101 a reality, especially for the region of Taiwan, which is very susceptible tcatastrophic hurricanes and earthquakes.