Considered to be one of the richest countries on the planet, Brunei has a capital with two sides to it. From the outside, the Bandar Seri Begawan residences are traditional, in wood, and on piling. Inside, modern comfort is everywhere. The general aspect of this lakeside city has not changed very much for centuries. All its charm is in its wooden houses on piles, in a style that has remained authentic. You can get around in motor boats or in a car. Visit the Omar Ali Seifeddine III mosque, it is one of the largest mosques in south-east Asia with an impressive dome made of gold. Go up to the top of the minaret for a general view of the city. Go and see the Sultan's Palace. With its 1,788 rooms and its ostentatious luxury, it is one of the most opulent palaces on the planet. You can only visit it on 15 July, the day of the Sultan's birthday. In the Royal Regalia Museum, you will discover the lavish lifestyle of the Sultan, and two centuries of the country's history. The Constitutional History Gallery will also allow you to discover the history of the country. The Hassanal Balkiah Aquarium holds everything of interest in the underwater flora and fauna of the region.