Sydney Harbour Bridge.

Affectionately dubbed "the Coathanger," the Sydney Harbour Bridge is a triumph of Depression-era engineering and an indispensable link between the CBD and the North Shore. Opened in 1932, this massive steel arch spans 503 meters and stands as a commanding fixture of the city skyline alongside the neighboring Opera House. Visitors can experience its scale in several ways: by walking or cycling the deck for classic views of the harbor, or by booking the guided BridgeClimb to scale the physical steel framework all the way to its 134-meter summit. Whether you are gazing up at its six million rivets from a ferry below or standing at the peak of the arch at twilight, the bridge offers some of the most dramatic, uninterrupted perspectives of Sydney.