Aerial photo taken on Aug. 16, 2016 shows the construction site of the Shimao quarry hotel in Songjiang District of Shanghai, east China. The five-star hotel is being built in a disused, 90 meter deep quarry. Estimated to be finished in 2017, the hotel will have 370 guest rooms in its two underwater storeys, 17 underground storeys and two above ground storeys. (Photo/Xinhua)
