Istana Nurul Iman, taken from the Arabic name, means Palace of the Faith Light; is the largest residential palace in the world and the world’s largest residence of any type.
This is the home of Sultan of Brunei’s istana nurul iman.
It contains 1,788 rooms, 257 bathrooms, and a floor area of 2,152,782 square feet (200,000 m²). Amenities include 5 swimming pools, and an air conditioned stable for the Sultan’s 200 polo ponies, a 110-car garage, a banquet hall that can be expanded to accommodate up to 4,000 guests, and a mosque accommodating 1,500 people.
The palace was built in 1984 at a cost of around $1.4 billion USD and has 564 chandeliers, 51,000 light bulbs, 44 stairwells, and 18 elevators. It is also a home to a car collection that includes custom-made Ferraris and Bentleys as well as 165 Rolls-Royces.
It was designed by the National Artist of the Philippines for Architecture, Leandro V. Locsin and built by the Filipino firm, Ayala International.
Istana Nurul Iman: 2,152,782 square feet (200,000.0 m2)
The Royal Palace of Madrid: 1,453,122 square feet (134,999.5 m2)
Buckingham Palace: 828,818 square feet (77,000 m2)
The Palace of Versailles: 551,218 square feet (51,210 m2)
Windsor Castle: 484,374 square feet (45,000 m2)
Rashtrapati Bhavan,India: 200,000 square feet (20,000 m2)
The White House: 55,000 square feet (5,100 m2)
(Source: Now That’s Nifty)