The HOSE building, located at 16 Võ Văn Kiệt Avenue ("đại lộ Võ Văn Kiệt"), District 1, Saigon (old address was 45-47 Bến Chương Street (Bến Chương Dương), District 1, Saigon), was originally the Chamber of Commerce "(Chambre de Commerce)" building during the French colonial era before 1954. After 1955, the building was renamed "Hội trường Diên Hồng" (Diên Hồng Conference Hall), and was the seat of the South Vietnamese Senate ("Thượng viện Việt Nam Cộng hòa") during the Second Republic period ("Đệ nhị Cộng hòa") under President Nguyễn Văn Thiệu, from 1967 to 1975.