Vietnam. Ho Chi Minh City (Saigon). Notre-Dame Basilica (Cathedral). Canon EOS Rebel T1i Canon EF-S 18-200 Saigon Notre-Dame Basilica, officially Basilica of Our Lady of The Immaculate Conception is a cathedral located in the downtown of Ho Chi Minh City, Vietnam. Established by French colonists, the cathedral was constructed between 1863 and 1880. It has two bell towers, reaching a height of 58 meters (190 feet).