The climb a tower of Pisa, Italy marble crazy high 54 meters (181 feet) with 8 floors, each floor has a fine carved marble support. Has embarked built in 1717 (AD 1174) to finish in the year 1893 (1350) the restaurant for up to 176 years, which is a structure that takes the longest building in the world.Another amazing thing is when I started to build a 4-5 storey tower began to tilt. But not to the avalanche. Because the force of gravity When dragging down so it does not fall out of the base has remained. When completed Top of the tower is tilted from the vertical plane of the base up to 4 meters (14 feet) and the Leaning Tower lets Galileo. The famous Italian scientists of the world.Experiments have astounded the speed of an object falling from a height.
The height of the 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 ft 0.06 in). Its weight is estimated at 14,500 metric tons (16,000 short tons).[1] The tower has 296 or 294 steps; the seventh floor has two fewer steps on the north-facing staircase. Prior to restoration work performed between 1990 and 2001, the tower leaned at an angle of 5.5 degrees,[2][3][4] but the tower now leans at about 3.99 degrees.[5] This means that the top of the tower is displaced horizontally 3.9 metres (12 ft 10 in) from where it would be if the structure were perfectly vertical.[6]