Sultan Omar Ali Saifuddien Mosque, Brunei

A gleaming mosque with a golden dome in the capital, Bandar Seri Begawan, built in 1958 beside an artificial lagoon with a replica royal barge. It's beautiful lit up at night.

Non-Muslims can visit outside prayer times; dress modestly (robes are provided). Nearby, Kampong Ayer is a huge water village on stilts, visited by water taxi.