Great Wall of China spans 13,171 miles with 30% undiscovered. The Great Wall of China is approximately 13,171 miles (2,196 km) long It is the longest man-made structure in the world Construction began in the 7th Century BC (approximately 2700 years ago)
21,196 km (13,171 miles) long! The Great Wall took over 2,000 years to build. 🧱 Built with stone, brick & rammed earth. Most is in ruins!
Key facts:
• Approx. 13,171 miles (21,196 km) long
• Built from the 3rd century BC to the 17th century AD (~2,000 years)
• Served multiple purposes: military defense, controlling trade, immigration, and communication
Key Facts
- The Great Wall of China is approximately 13,171 miles (2,196 km) long
- It is the longest man-made structure in the world
- Construction began in the 7th Century BC (approximately 2700 years ago)
- Construction finished in the 16th century AD
- The wall served multiple purposes: military defense, controlling trade, immigration, and communication
- Materials used include stone, brick, rammed earth, and wood
- Over 2,000 watchtowers and numerous gates were built along the wall
- Estimates suggest hundreds of thousands to possibly millions of workers were involved
- Up to 30% of the wall remains undiscovered or buried
- Average height is 20-30 feet (6-9 meters)
- Width varies between 15-30 feet (4.5-9 meters)
- Over 10 million people visit the wall annually
- A vast majority of the wall is in ruins and not restored
Related site: Great Wall of China — view location, images, and history on the Ancient Nerds map.
Source: This Great Wall of China Conspiracy Theory is Disturbing by Bright Insight