Great Wall

The Great Wall of China is an extensive series of fortifications built over centuries to protect Chinese states from invasions and raids by nomadic tribes. Constructed primarily from stone, brick, wood, and earth, it stretches over 13,000 miles across northern China. The wall served defensive purposes, facilitated border control, and symbolized Chinese strength and unity. Built between the 7th century BC and the 17th century AD, it is an engineering marvel reflecting ancient military strategy and cultural resilience. Today, it is a UNESCO World Heritage site and a popular symbol of China's long history.