What time is the Great Wall built?

The Great Wall, yan took great has a history of over 2000 years. People see today, it is the bright Great Wall west gansu province, east to the river side. The badaling is a representative of the Great Wall, is at an altitude of more than 1,000 meters, tourist attractions, is. Great Wall, with a wide brim of high average 7.8 meters, can WuMa 7.8 meters and riding, ten listed parallel.
The tourists to visit China and mo want to see the Great Wall board. Visit the Great Wall, recognized the ideal place is on the outskirts of Beijing badaling. Out went north-west of Beijing, about 1 hour driving cars, arrived at an altitude of more than 1,000 meters of badaling. The Great Wall of the juyongguan pass, the conjugate badaling.