Sydney Tower Eye, also known as Centre Point Tower is the tallest structure in Sydney, New South Wales, Australia, and the second-tallest observation tower in the Southern Hemisphere. It has also been known as AMP Tower, and colloquially as Flower Tower, Glower Tower, and Big Poke. The Sydney Tower is a member of the World Federation of Great Towers. The tower stands 309 m above the Sydney central business district, located on Market Street, between Pitt and Castlereagh Streets.