Sydney Tower Eye is Sydney's tallest free-standing structure, and the second tallest in Australia . It is also the second tallest observation tower in the Southern Hemisphere (after Auckland's Sky Tower, though Sydney Tower Eye's main observation deck is almost 50 m (164 ft) higher than that of Auckland's Sky Tower). The Sydney Tower Eye is a member of the World Federation of Great Towers.
The tower stands 309 m (1,014 ft) above the Sydney CBD, being located at 100 Market Street, between Pitt and Castlereagh Streets. It is accessible from the Pitt Street Mall, and sits upon an office and shopping centre development formerly known as Centrepoint. The tower is open to the public, and is one of the most prominent tourist attractions in the city, being visible from a number of vantage points throughout town and from adjoining suburbs. Whilst the Shopping centre at the base of the tower is run by the Westfield Group the tower itself is part of Merlin Entertainments. Visitors can buy a pass from Merlin or at the gate that allows them to visit a variety of Sydney attractions including Wild Life Sydney and the Sydney Aquarium.