The Great Wall that stands today is much grander than Shi Huangdi’s wall.
It is a result of construction started in 1368 CE, by the Ming dynasty. Much of the Great Wall stands 25 feet high and is equally as wide. It is made mostly of brick and stone and features tall watchtowers. The many sections and branches erected by the Ming dynasty cover more than 5,500 miles. About a quarter of that distance consists of natural barriers, such as rivers and hills. A small portion is made up of ditches. A measurement done in 2012 concluded that the overall length of the wall, including parts built at many different times, is 13,170 miles.
