Abraj Kudai, the largest hotel in the World?

With 10,000 rooms (yes 10k), this hotel is expected to open this year and will have 70 restaurants and five helipads.  Ten of the towers are intended to provide four-star accommodation while the remaining two will offer luxurious five-star amenities. Catering to the needs of tourists, the city receives around 2 million pilgrims for the annual Hajj. And another 20 million the rest of the year.

Seems since these tourists are not permitted to enter the US, tourism in Saudi Arabia will boom!