The world's first underground hotel will open to the public on November 20 in Shanghai,according to Xinhua.

Located 30 kilometers from the center of the east China metropolis(大城市，大都市京城首府) Shanghai,the hotel is built near the Shanghai Mountain National Forest Park and Chenshan Mountain Botanic Gardens .The hotel has been built  in a formerly abandoned quarry that plunges 80 meters below the ground level ,Of the 18 floors in the hotel ,16 of these are  underground ,while two floors are completely underwater inside the hotel's 10-meter deep aquarium.

As the word's first five -star hotel  built in a water crater ,the hotel will not only create the world record for the lowest five-star hotel built globally ,but also its concept of "reverse sky " development will  become a revolutionary architectural design

The hotel was designed by the architects who also created Dubai's Burj AI Arab and the whole construction project has taken nearly 10 years with approximately 5000 architects . engineers ,designers and construction workers involved

Building such a hotel on a pit wall with an elevation (海拔，高地，提拔) of 88 meters below ground level has met many constuction chanllenges ,such as drainage (排水) ,transportation  of buliding materials ,natural disasters (灾害，灾难) prevention  and more ,This has required innovative engineering solutions, such as the irregular section construvtion  elevator system .which has solved the problem of  construction an elevator installation on irregular(不整齐的，不平整的)and inclined cliff wall.

The hotel is also a wonderland(奇景) that offers  unique underground scenery ,Each of the 336 rooms ,aside from those underwater .will feature a balcony with views of waterfalls (瀑布)splling down the quarry walls

As of now ,the hotel is fully booked on the opening day 。