Doha Tower vs Pisa Tower

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Burj Doha, also known as Doha Tower (Arabic: ??? ????) and formerly called Burj Qatar and Doha High Rise Office Building, is an iconic high rise tower located in West Bay, Doha, Qatar. On October 18, 2012, the building received the CTBUH Skyscraper Award for the Greatest Tall Building Worldwide in the CTBUH. The $125-million office building, designed by French architect Jean Nouvel, has a height of 238 metres (781 feet ), with 46 stories. In 2004 the project was named as High Rise Office Building and after completion of construction in 2012 was branded as Burj Doha by the owner, H. E. Sheikh Saud bin Muhammed Al Thani. The public has noticed the building's'phallic form', no matter what Nouvel calls a'fully assumed virility. 'Doha Tower comprises 46 floors above floor, three floors below ground and a total gross floor area of approximately 110,000 m².

It has no central core, leaving more inner space accessible to its occupants. The design is unique, the first skyscraper with inner reinforced concrete diagrid columns, which form a cross (X) shape that joins with the eye cylindrical facade. The design expresses the local culture, connecting the very contemporary with ancient Islamic designs (Mashrabiya). Islamic screens were designed to shade the building from high temperatures as well as the unpleasant sand residue found on glass throughout the area. The building is designed to hold offices for companies wishing to operate in the diverse business district of West Bay. Doha Tower is owned by Sheikh Saud bin Muhammed Al Thani and operated by Hamad Bin Saoud Group. It is now the sixth tallest building in Doha.

Source: Wikipedia

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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