Milky Way above Heavenly Bridge by Isaac Si on 500px. Milky Way above Heavenly Bridge This photo is taken on Simatai Great Wall towards the Beijing-Watching Tower which is the highest ancient building in Beijing. This Single-Side Wall is also called Heavenly Bridge which is constructed about 600 years ago. Luo Zhewen, a Chinese construction expert, believes that it is the most majestic location of the Great Wall.