The Milky Way and the Summer Triangle
over the Great Wall of China.
The Summer Triangle is made up the bright stars Vega (bright blue star near the top of the image), Deneb (blue star to the lower left of Vega) and Altair (to the lower right of Deneb.
This part of the Great Wall, a World Culture Heritage Site, was built during the 6th century on the Yan Mountains. At the summit is Wangjinglou Tower from which, on a clear night, the lights of Beijing are visible in the distance.
Image Credit & Copyright: Steed Yu & NightChina.net