The Great Wall of China is a walls and fortifications located in northern China

The Great Wall of China is an ancient series of walls and fortifications located in northern China. It is one of the world's most iconic structures and is considered one of the Seven Wonders of the World. The wall stretches over 13,000 miles (21,000 km) across the northern part of the country and has been built over many centuries, with some sections dating back as far as the 7th century BC.