The Great Wall of China

The Great Wall （萬里長城） of China is one of the biggest structures ever built by humans. It is about 13,171 miles (21,197 km) long, 30 feet (9 metres) wide and 50 feet (15 metres) high. It covers 15 regions in northern China, often tracing the crest （山峰）lines of hills and mountains as it snakes （蜿蜒伸展） across the countryside.  It begins in the east at Shanhai ...Read More