The Omar Ali Saifuddien Mosque is a must-see landmark in Bandar Seri Begawan, easily accessible for most visitors, though modest dress (shoulders and knees covered) is required, with robes often provided for loan. Entry is free, making it a highly cost-effective attraction. Visitors can explore independently or opt for a guided tour for deeper cultural context; both options are viable. The typical visit duration ranges from 30 minutes to an hour to fully appreciate its stunning architecture, golden dome, and artificial lagoon. While generally open year-round, be mindful of prayer times and major Islamic holidays, which may restrict access. Photography is usually permitted outside but restricted inside the main prayer hall. For an unforgettable experience, visit at sunset or evening when the mosque is beautifully illuminated.