Turning Torso vs Pisa Tower

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Turning Torso is a neo-futurist residential skyscraper in Sweden and the tallest building in Scandinavia.Located in Malmö on the Swedish side of the Öresund strait, it was built and is owned by Swedish cooperative association HSB. It's seen as the first twisted skyscraper in the world.The project was designed by Spanish architect, structural engineer, sculptor and painter Santiago Calatrava and formally opened on 27 August 2005.

The tower reaches a height of 190 metres (623 feet ) with 54 storeys and 147 apartments.In August 2015, it was announced that the building was the winner of the 10 Year Award from the Council on Tall Buildings and Urban Habitat. It won the 2005 Gold Emporis Skyscraper Award.

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