Come 2017, the world will have a new largest hotel by room count—by a hefty margin. The Guardian takes a look at what's coming to Saudi Arabia's Mecca: the $3.5 billion Abraj Kudai, which will sit about a mile from the Grand Mosque and feature one of the largest domes in the world. The numbers associated with the hotel, designed by architectural firm Dar Al-Handasah, are wild. Five standouts: