CLIMBING THE GREAT WALL: Citizen TV journalists visit the Great Wall of China

The Great Wall of China is one of the largest man-made structures on earth. It stretches more than 21,000 kilometres and is a UNESCO World Heritage Site. It was built by imperial china to protect itself from outside aggression, and today attracts millions of tourists annually. Citizen BTV's Boniface Barasa paints a picture of the experience of climbing the Great Wall of China.