Badaling fortress was built in 1505 on the key route between the North and the South.It was of great strategic importance as was the object of many battles by ancient military powers.

• 八达岭长城的关于建于弘治十八年（公元1505）年，自古以来就是南北交通要道，更是历代兵家必争之地，具有极其重要的战略意义。