Six Construct , and Arabtec by President Zayed bin Sultan Al Nahyan , placing its ownership in the government of Abu Dhabi . Turner Construction names the architect in charge Wimberly Allison Tong & Goo . Its design hails from British architect John Elliot . Its doors opened in 2005 after four years of work , with the input of 20,000 workers . The United Arab Emirates , according to Arabian Business , is the 26th most expensive place to build in the world . With its 400 rooms , 114 domes , and a site area of over 70 hectares ( according to Turner Construction ), the hotel was able to host over 15,000 people for a 2008 Christina Aguilera concert .

54 February 2018