Swire Properties Inc., the U.S. subsidiary of global developer Swire Properties Limited, and Related Companies, the most prominent privately-owned real estate firm in the United States, today announced that demolition has commenced on the site of the future One Brickell City Centre, an approximately 1,000-foot super tall tower that will be the tallest commercial building in Florida. Miami Mayor Francis X. Suarez; Henry Bott, the president of Swire Properties; and Stephen M.