Mediev · Stonehenge is a prehistoric monument located in the English county of Wiltshire, about 3.2 kilometers west of Amesbury and 13 kilometers north of Salisbury. · One of the most famous sites in the world, Stonehenge is composed of earthworks surrounding a circular setting of large standing stones. · It is at the centre of the most dense complex of Neolithic and Bronze Age monuments in England, including several hundred burial mounds. · The Colosseum underwent several radical changes of use during the medieval period. · By the late 6th century a small church had been built into the structure of the amphitheater, though this apparently did not confer any particular religious significance on the building as a whole. · The arena was converted into a cemetery. · The numerous vaulted spaces in the arcades under the seating were converted into housing and workshops, and are recorded as still being rented out as late as the 12th century. · Colosseum Severe damage was inflicted on the Colosseum by the great earthquake in 1349, causing the outer south side, lying on a less stable terrain, to collapse. · The Great Wall of China. · The Chinese were already familiar with the techniques of wall-building by the time of the spring and Autumn Period, which began around the 8th century BC. · During the Warring States Period from the 5th century BC to 221 BC, the states of Qin, Wei, Zhao, Qi, Yan and Zhongshan all constructed extensive fortifications to defend their own borders. · Built to withstand the attack of small arms such as swords and spears, these walls were made mostly by stamping earth and gravel between board frames. · The Leaning Tower of Pisa is the campanile, or freestanding bell tower, of the cathedral of the Italian city of Pisa. It is situated behind the Cathedral and is the third oldest structure in Pisa's Cathedral Square after the Cathedral and the Baptistery. · The height of the tower is 55.86 m from the ground on the low side and 56.70 m on the high side. · The width of the walls at the base is 4.09 m and at the top 2.48 m. · Its weight is estimated at 14,500 metric tons. 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, but the tower now leans at about 3.99 degrees. · This means that the top of the tower is displaced horizontally 3.9 metres from where it would be if the structure were perfectly vertical.
· Stonehenge is a prehistoric monument located in the English county of Wiltshire, about 3.2 kilometers west of Amesbury and 13 kilometers north of Salisbury.
· One of the most famous sites in the world, Stonehenge is composed of earthworks surrounding a circular setting of large standing stones.
· It is at the centre of the most dense complex of Neolithic and Bronze Age monuments in England, including several hundred burial mounds.
· The Colosseum underwent several radical changes of use during the medieval period.
· By the late 6th century a small church had been built into the structure of the amphitheater, though this apparently did not confer any particular religious significance on the building as a whole.
· The arena was converted into a cemetery.
· The numerous vaulted spaces in the arcades under the seating were converted into housing and workshops, and are recorded as still being rented out as late as the 12th century.
· Colosseum Severe damage was inflicted on the Colosseum by the great earthquake in 1349, causing the outer south side, lying on a less stable terrain, to collapse.
· The Great Wall of China.
· The Chinese were already familiar with the techniques of wall-building by the time of the spring and Autumn Period, which began around the 8th century BC.
· During the Warring States Period from the 5th century BC to 221 BC, the states of Qin, Wei, Zhao, Qi, Yan and Zhongshan all constructed extensive fortifications to defend their own borders.
· Built to withstand the attack of small arms such as swords and spears, these walls were made mostly by stamping earth and gravel between board frames.
· The Leaning Tower of Pisa is the campanile, or freestanding bell tower, of the cathedral of the Italian city of Pisa. It is situated behind the Cathedral and is the third oldest structure in Pisa's Cathedral Square after the Cathedral and the Baptistery.
· The height of the tower is 55.86 m from the ground on the low side and 56.70 m on the high side.
· The width of the walls at the base is 4.09 m and at the top 2.48 m.
· Its weight is estimated at 14,500 metric tons. 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, but the tower now leans at about 3.99 degrees.
· This means that the top of the tower is displaced horizontally 3.9 metres from where it would be if the structure were perfectly vertical.