One Biscayne Tower is an office skyscraper in Miami, Florida, United States. It is located on the eastern edge of Downtown Miami, on South Biscayne Boulevard. It comprises Class A office space completely. The approximately 983,000 square feet building contains 39 floors and is 492 ft (150 m) tall, to the roof. When built in 1972, it was the tallest building in Miami. It held this status until the Southeast Financial Center was topped off in 1984.