4. Istana Nurul Iman
With 1,788 rooms, a banquet hall that can seat over 4,000 guests, a 1,500 people capacity Mosque, 5 swimming pools and a 110-car garage, the 200,000 sq.m. Sultan of Brunei's lavish Royal Palace, build by the Philippine's Ayala Corporation in 1984, is the world's largest residential palace, situated on top of a hill overlooking the capital and the Brunei River
4. Istana Nurul Iman
With 1,788 rooms, a banquet hall that can seat over 4,000 guests, a 1,500 people capacity Mosque, 5 swimming pools and a 110-car garage, the 200,000 sq.m. Sultan of Brunei's lavish Royal Palace, build by the Philippine's Ayala Corporation in 1984, is the world's largest residential palace, situated on top of a hill overlooking the capital and the Brunei River