Join 9 upcoming events being held in Bandar Seri Begawan. Bandar Seri Begawan is the capital and largest city of Brunei, known for its impressive Sultan Omar Ali Saifuddien Mosque, the Royal Regalia Building showcasing the nation's wealth and history, and the lively Gadong Night Market offering local food and handicrafts, set against the backdrop of a modern city with a rich cultural and historical heritage.