The world’s biggest hotel is set to open in Mecca in 2017, offering an unprecedented level of luxury to travelers and royalty alike in Saudi Arabia.

The Abraj Kudai will cost about $3.6 billion, featuring 10,000 bedrooms, 70 restaurants and four helipads. At 45 stories tall, the desert fortress-style hotel boasts 12 towers atop a 10-story podium, which contains a bus station, food courts, a shopping mall and an extravagant ballroom. But five floors will be off limits to the most guests — they’re reserved exclusively for the Saudi royal family.