The Great Wall of China is as synonymous with China as the Tower Bridge is with Great Britain, the Statue of Liberty to the United States or the Sydney Harbour Bridge to Australia. The difference between the Great Wall and all those other things, though, is that the Great Wall came first.

Shrouded in mystery, myth, legend and history, what is the Great Wall, why was it built? How long has it been around and what is it made of? Who built it and to what purpose?

A Note on the Title

For the unknowing and curious readers who have puzzled over the title of this posting, I took inspiration for the title from this famous Australian BigPond Broadband Internet advertisement and the title of the film “The Rabbit-Proof Fence”.

The Purpose of the Great Wall

The Great Wall is not just one structure. It is in fact a series of walls that were built along China’s northern borders, starting in the 5th Century BCE and ending in the 1500s. The walls were built in an attempt to prevent invasions from barbarians, nomadic tribes and Mongolian armies from the north. Several provinces and states in northern China had constructed earthwork and wood defences along their borders as protection against each other as well as for protection against neighbouring countries. In the roughly 200 years before the Birth of Christ, Emperor Qin Shi Huang founded the Qin Dynasty, and so began Chinese Imperial rule, a form of rulership that would continue for centuries, well into the 20th century. In 221 BC, Emperor Shi Huang ordered that all individual state borders and defences be destroyed. It was his desire to unify China as one country and for that one country to defend itself. Building on the ideas of his subjects, Emperor Shi Huang ordered the construction of the first Great Wall.

Very little of that original Great Wall still exsists today. Most of it was destroyed by the elements over the centuries, or was incorporated into additions made to the wall by other emperors during subsequent reigns and dynasties. It’s believed that over a million construction-workers died while building these initial segments of the Great Wall.

Over the next few centuries, Mongolian warriors grew more powerful. The Han and Ming Dynasties added considerably to the wall, due to the increase in attempted invasions by Manchurian armies from the north, starting in the early 1600s. From the start to the end of the Ming Dynasty, nearly 5,000 extra miles of wall was built to combat the threats of invasion from the north.

Building the Great Wall

Because the Great Wall is centuries old, it isn’t actually built out of any one material. Sections of the wall have been built using anything and everything from rubble, specially cut stones, wood, bricks and even rammed earth. The earliest incarnations of the Great Wall were built out of rubble, stones and wood. Rammed earth was also used. It wasn’t until much later that bricks entered the construction site.

Rammed earth construction is what a significant portion of the Great Wall was made of. This is unique construction-technique that has been known since ancient times. Combining ordinary soil, gravel, chalk and other natural materials, the earth is rammed to form the structure it will be building. Rammed earth is packed, pummelled and rammed…hence the name…until it has become extremely compact and dense. This construction method meant that the Great Wall was extremely strong and solid, as well as being impervious to fire…an obvious benefit when constructing a defensive barrier. Rammed earth construction was easy to do, but was extremely labour-intensive, and the Great Wall required millions of labourers to aid in its construction.

It was in later times, around the 16th and 17th centuries, that the Great Wall started taking on the shape that we know it for today, built out of bricks and with wide walkways and watchtowers along its length. Bricks were easier to produce and faster to shape than stones. This readily-available building material meant that the wall could be built faster and stronger.

Of course, for the Great Wall to be built of bricks, it had to have mortar to bind and hold the bricks together. Believe it or not, but the ancient Chinese had already devised a mortar for their bricks. And it wasn’t cement, either. Ancient Chinese mortar was made of rice and eggs! Prepared properly, this simple mixture, which could easily be mistaken for the worker’s lunchbreak snacks, is a substance of surprising strength, and it is still used today in the restoration of ancient Chinese buildings.

The Greatness of the Wall

The Great Wall of China would never be called the Great Wall if there was nothing for it to be great about…would there?

So, what is so great about this wall, anyway?

Including trenches, valleys, rivers and the manmade structure itself, the Great Wall is 8,851km long (5,500mi).
It has over 700 beacon-towers and over 7,000 lookout towers.
Although this obvious varies along its length, the Great Wall is an average of about 20-24ft high.
The wall is 15-30ft wide at the base, and correspondingly, 9-12ft wide at the top. Wide enough for columns of troops, or wagons, to drive along the wall.

The Wall’s name in Chinese is the Wan Li Chang Cheng. “Changcheng” translates into English as “Long fortress” or “Long Wall”. “Wan” is the number ‘10,000’. The word “Li” was a traditional Chinese unit of measurement. In modern measurements, 1Li is 500 meters.

It has long been rumored that the Great Wall is so great that it is actually visible from the moon. This is not true. The colour of the wall’s bricks blends in too easily with the colour of the surrounding earth, making the Wall impossible to see from space, and more than impossible to see from the moon! Testimony from famous astronauts such as Neil Armstrong confirmed the fact that the Great Wall is not actually visible from space at all.

The Great Wall of China ceased being a defensive structure after the 18th century. The Qing or Manchu Dynasty (the last dynasty of Imperial China) was made up of a group of invading Manchus from the north. Their presence in China made the wall’s purpose (keeping out invaders) obsolete and no further additions were made to the wall after this point. The Great Wall was recognised as a significant historical and cultural icon in the second half of the 20th century, and the UNESCO World Heritage Committee made it a World Heritage Site in 1987. Although the ‘touristy’ areas of the Great Wall are renovated, repaired and restored, both for tourist, historic and safety reasons, many sections of the Great Wall, far away from the big cities of northern China, are in disrepair due to natural elements as well as various other factors, such as the wall’s bricks being removed by local villagers for use in construction of homes and roads. Nevertheless, the Great Wall of China remains one of the most famous structures in the world.