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古北口长城古北口长城在密云县境内,东侧为司马台长城,西侧是卧虎山长城,这段长城名蟠龙山长城。古北口自古以来就是北京城北边的重镇,早在春秋时,燕国为了抵御外敌,就在古北口筑城设关。北齐天保六年(555年)文宣帝为防止突厥侵扰,征调180万民夫,修筑了全长1500公里,西起陕西榆林,东至山海关的北齐长城,而古北口是北齐长城全线中重要关口。金
Gubeikou Great Wall Gubeikou Great Wall in the territory of Miyun County, east of Simatai Great Wall, west of the Great Wall Tiger Hill, this Great Wall Banya Longshan Great Wall. Gubeikou since ancient times is the center of the northern city of Beijing, as early as the Spring and Autumn Period, Yan State in order to resist foreign enemies, in Gubeikou fortification. In order to prevent Turks from interfering with the Turks, Emperor Wen Xuan of the Northern Qi Dynasty collected 1,800,000 peasants and built a 1500-km long northern section of the Great Wall of the Northern Qi along Yulin in Shaanxi and the Shanhaiguan in the east. The Gubeikou is an important gateway across the Great Wall in the Northern Qi Dynasty. gold