Sapphire of Istanbul vs Pisa Tower

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Istanbul Sapphire, or Sapphire, is a skyscraper located in the central business district of Levent in Istanbul, Turkey.

It was Istanbul's and Turkey's tallest skyscraper between 2010 and 2016, and the 4th tallest building in Europe when its construction was finished in 2010. Sapphire rises 54 floors above ground level, and contains an above-ground roof height of 238 meters: the construction has an overall structural height of 261 meters including its spire, which is part of the design rather than a radio antenna. Designed by Tabanl?o?lu Architects, it's a luxury and shopping residence mixed-use development managed by Kiler GYO.



It's also the nation's first ecological skyscraper. As of 2020, Istanbul Sapphire is the 4th tallest skyscraper in Istanbul and Turkey, behind Metropol Istanbul Tower 1 (70 flooring / 301 metres including its twin spires) from the Ata?ehir district on the Asian side of the city; and the Skyland Istanbul Towers 1 and 2 (2 x 70 flooring / 293 metres), located adjacent to Türk Telekom Stadium at the Seyrantepe quarter of the Sar?yer district, on the European side.

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