Simatai (司马台) - the Great Wall (Nadie Como Tu)

Simatai, (simplified Chinese: 司马台; traditional Chinese: 司馬臺; pinyin: Sīmǎtái) a section of the Great Wall of China located in the north of Miyun County, 120 km northeast of Beijing, holds the access to Gubeikou, a strategic pass in the eastern part of the Great Wall. Originally built during the Northern Qi dynasty (550-577) and rebuilt in the Hongwu years of the Ming dynasty by Qi Jiguang, this section of Great Wall is one of the few to retain the original features of the Ming dynasty Great Wall.

Simatai Great Wall is 5.4 km long with 35 beacon towers. This section of the Great Wall incorporated the different characteristics of each section of the Great Wall. A specialist on the Great Wall, Professor Luo Zhewen, has said "The Great Wall is the best of the Chinese buildings, and Simatai is the best of the Great Wall." UNESCO has designated Simatai Great Wall as one of the World Cultural Heritage sites.

司马台长城是中国万里长城的其中一段，位於北京市密云县与河北省滦平县之间。它是长城中最险要的一段，东起望京楼，西至后川口，全长5.4公里。长城本建於北齐，现存的建筑为明朝时期所建。該长城被鸳鸯湖分为东西两段，分别有敌楼16和19座。由於該长城西接金山岭长城，因此不少远足者喜爱同游两座长城。长城闻名的原因除了险要之外，还有整修後依然能较好的保留古迹原貌。司马台长城於1987年被列入世界遗产名录，属国家级重点文物保护单位。

东15楼至东16楼之间称为天桥，为一堵阔约30厘米的墙，南侧是悬崖，故是最危险的一段。因此基於安全理由，游人最多只能登到东12楼。到东12楼。