By 1990, the tilt had reached 5.5 degrees. 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. The tower has 296 or 294 steps the seventh floor has two fewer steps on the north-facing staircase. Its weight is estimated at 14,500 metric tons (16,000 short tons). The width of the walls at the base is 2.44 m (8 feet 0.06 in). 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 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 Leaning Tower of Pisa (Italian: Torre pendente di Pisa) or simply the Tower of Pisa (Torre di Pisa ) 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. During its construction, the Eiffel Tower surpassed the Washington Monument to become the tallest man-made structure in the world, a title it held for 41 years until the Chrysler Building in New York City was completed in 1930. Its base is square, measuring 125 metres (410 ft) on each side. The tower is 324 metres (1,063 ft) tall, about the same height as an 81-storey construction, and also the tallest structure in Paris. The Eiffel Tower is the most-visited paid monument in the world 6.91 million people ascended it in 2015. It's named after the engineer Gustave Eiffel, whose firm designed and built the tower.Ĭonstructed from 1887 to 1889 as the entrance to the 1889 World's Fair, it was initially criticised by a number of France's leading artists and intellectuals for its design, but it has become a worldwide cultural icon of France and one of the most recognisable structures on the planet. The Eiffel Tower ( EYE-f?l French: tour Eiffel (listen)) is a wrought-iron lattice tower on the Champ de Mars in Paris, France.
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