World's largest private house belongs to Brunei's Sultan
The Istana Nurul Iman Palace of Brunei's Sultan, Hassanal Bolkiah, is the world's largest residential building with approximately 1,800 rooms. It features a garage for 110 cars and a private collection of ultra-luxury vehicles of incalculable value. The palace building is not only a luxurious villa but also the largest royal palace in the world.