Perched on the banks of an artificial lagoon along the Brunei River, Sultan Omar Ali Saifuddin Mosque is one of the most recognizable landmarks of Brunei. Built in 1958 and named after the 28th Sultan of Brunei, this lavish mosque boasts Italian marble floors and walls, English chandeliers and Saudi Arabian woven carpets.
The exterior of the main dome is covered in gold leaf, while the interior features a glass mosaic made up of 3.5 million individual pieces. The minarets of the mosque stand 171 feet (52 meters) tall, making the mosque the tallest structure in Bandar Seri Begawan, visible from almost anywhere in town.
Visitors are not allowed inside the mosque during prayer times, so check ahead before your visit.