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Diamond Plaza is a complex building in downtown District 1, Ho Chi Minh City. The complex includes a 22-story tower for residences and offices, a 15-story tower for offices and 6 cinema lounges and a 4-story building base for luxurious shopping center, bowling, restaurants, café and hospital. The complex was completed and opened for business in May 1999. A helicopter pad is on the roof of the building. By this building is located next to April 30 Park, Saigon Notre-Dame Basilica and Saigon Central Post Office. South Korea's Posco Construction & Engineering and Vietnam's VNSteel did the construction for the building.