Nurul Istana Iman is the largest residential palace in the world designed by Filipino architect Leandro Locsin.
The best time to see the palace interior is during Hari Raya. Otherwise, you will see only its gate as no one is allowed to enter.
During this festival, the Sultan of Brunei opens its house to everyone and give money and food to eat to the people.
What I like about this palace is its structure! The best place to see it? When you are in the plane and seated in a row with letter H if you are taking Royal Brunei from Singapore!