Saigon Central Mosque Built by South Indian Muslims in 1935 on the site of an earlier mosque, the Saigon Central Mosque is an immaculately clean and well-kept island of calm in the middle of the bustling Dong Khoi area. In front of the sparkling white-and-blue structure, with its four nonfunctional minarets, is a pool for the ritual ablutions required by Islamic law before prayers. Take off your shoes before entering the sanctuary.