He married Võ Thị Cơ and had eight children, one of whom, Dr. Ngô Viết Nam Sơn, is also an architect and planner, working both in the United States and in Vietnam.
From 1955 to 1958, he became resident at the Villa Medicis (Rome), sponsored by the Academy of France, to conduct research of architecture and urban planning.
[3] He designed the Independence Palace (also known as the Presidential Palace, 1962–66, later renamed Reunification Palace,[4][5][6] on 30 April 1975) in Hồ Chí Minh City, Huế University's campus (1961–63), Atomic Research Center at Đà Lạt (1962–1965), Thủ Đức University Campus (1962), Hương Giang 1 Hotel in Huế (1962), Phủ Cam Cathedral (1963), the Air Vietnam Headquarters (1972), the Agriculture University in Thủ Đức (1975), Sông Bé Hospital (1985), Century Hotel in Huế (1990).
Two of his most famous paintings were "National Landscape" (displayed at the main dining room of the Independence Palace) and "Speed" (private collection).
[citation needed] Ngô Viết Thụ died on 3 September 2000 in Ho Chi Minh City, aged 72.