Sydney Tower, also known as Westfield Tower and formerly as Centrepoint Tower, is an observation and telecommunications tower that is the tallest structure in Sydney, New South Wales, Australia, as well as the second-tallest observation tower in the Southern Hemisphere. Sydney Tower has also previously been known as AMP Tower, and colloquia…Sydney Tower, also known as Westfield Tower and formerly as Centrepoint Tower, is an observation and telecommunications tower that is the tallest structure in Sydney, New South Wales, Australia, as well as the second-tallest observation tower in the Southern Hemisphere. Sydney Tower has also previously been known as AMP Tower, and colloquially as Flower Tower, Glower Tower, and Big Poke.