Rising up majestically amidst the vibrant blue skies, the Omar Ali Saifuddien Mosque is an architectural marvel, named after the modern architect of Brunei and the 28th Sultan of Brunei. Brunei's most iconic and oldest mosque is the tallest structure in Bandar Seri Begawan at 52 metres, able to house 3000 worshippers and boasting a spectacular dome covered in pure gold.