Sydney Harbor

The harbor is the defining characteristic of the city. Its multiple sandstone headlands, dramatic cliffs, rocky islands and stunning bays and beaches, make it one of the most beautiful stretches of water in the world. Officially called Port Jackson, the harbor stretches some 20km inland to join the mouth of the Parramatta River. The most scenic area is on the ocean side of the bridge. The Sydney Harbor National Park protects the scattered pockets of bushland around the harbour and offers good walking tracks. The best way to experience the harbour is to go sailing, but if you're lacking nautical skills there are plenty of ways to enjoy it. Try catching the Manly ferry, swimming at Nielsen Park, walking from Manly to Spit Bridge, having a drink at Watsons Bay, dining with a view at Rose Bay, Balmoral or Circular Quay, or cruising to the heads on the Bounty.

Sydney Opera House

Australia's most recognizable icon is dramatically situated on the eastern headland of Circular Quay. Its famous sail- and shell-like roofs were inspired by palm fronds, according to architect Jorn Utzon, but may remind you of turtles engaging in sexual congress. The Opera House is so unique that it has been photographed a zillion times, appears on an army of cheap t-shirts, every other Sydney postcard and decorates the frames of Dame Edna's dramatic glasses. It was built between 1959 and 1973, but plagued with construction delays and political difficulties which culminated in the resignation of Utzon in 1966. Although some visitors are disappointed by the interior, designed by a consortium of Australians after Utzon quit, it's a truly memorable place to see a performance or to sit at one of its outdoor cafes with a bottle of white wine and watch harbour life go by. The Opera House hosts theatre, classical music, ballet and film, as well as the seasonal opera performances. There is free music on the prow of the Opera House on weekends and a craft market on the forecourt on Sunday.