The Shimao Wonderland Intercontinental, or Songjiang Shimao Hotel, is a unique hotel that is currently under construction in Songjiang, People’s Republic of China, 30 miles from Shanghai. It is being built on the site of an abandoned quarry and, notably, features some rooms underwater.
The hotel is currently in the detailed design stage, though construction has commenced. It is expected to be ready between 2013 and 2015.
If you use the Timeslider to 2/12/2008 you can see the site of the above link.