Pisa Tower vs Taipei 101

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The Leaning Tower of Pisa (Italian: Torre pendente di Pisa) or simply the Tower of Pisa (Torre di Pisa [?torre di ?pi?za]) is the campanile, or freestanding bell tower, of the cathedral of this Italian city of Pisa, known globally for its almost four-degree lean, the result of an unstable foundation. The tower is situated behind the Pisa Cathedral and is the third-oldest structure in the city's Cathedral Square (Piazza del Duomo), following the palace and the Pisa Baptistry. The height of this tower is 55.86 metres (183.27 feet) from the ground on the low side and 56.67 metres (185.93 feet) on the high side.

The width of the walls at the base is 2.44 m (8 feet 0.06 in). Its weight is estimated at 14,500 metric tons (16,000 short tons). The tower has 296 or 294 steps; the seventh floor has two fewer steps on the north-facing staircase. The tower began to lean during construction in the 12th century, due to soft ground which could not properly support the structure's weight, and it worsened through the completion of building in the 14th century. By 1990, the tilt had reached 5.5 degrees. The structure was stabilized by remedial work between 1993 and 2001, which decreased the tilt to 3.97 degrees.

Source: Wikipedia

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The Taipei 101 (Chinese: ??101; pinyin: Táib?i y? líng y?; stylized as TAIPEI 101), formerly called the Taipei World Financial Center (????????), is a supertall skyscraper designed by C.Y. Lee and C.P. Wang in Xinyi, Taipei, Taiwan. This building was officially classified as the world's tallest from its opening in 2004 before the 2010 completion of the Burj Khalifa in Dubai, UAE. Its elevators, capable of traveling 60.6 km/h (37.7 mph) and used to transport passengers in the 5th to 89th floor in 37 seconds, set new records upon completion. In 2011 Taipei 101 received a Platinum rating under the LEED certification system to become the tallest and largest green building in the world. The arrangement regularly appears as an icon of Taipei in international media, and the Taipei 101 fireworks displays are a regular feature of New Year's Eve broadcasts. Taipei 101's postmodernist architectural design evokes traditional Asian aesthetics in a contemporary structure employing industrial substances. Its design incorporates numerous features that allow the construction to withstand the Pacific Ring of Fire's earthquakes as well as the region's tropical storms. The tower houses restaurants and offices as well as both indoor and outdoor observatories. The tower is adjoined with a multilevel shopping mall that has the world's largest ruyi symbol as an exterior feature. Taipei 101 is possessed by Taipei Financial Center Corporation. The skyscraper started on 31 December 2004 to celebrate New Year's Eve.

Source: Wikipedia