5 Dollars - Elizabeth II Sydney Harbour Bridge

Niue has functioned as a prolific legal tender vehicle for third-party commemorative programs since the 1990s, with the New Zealand Treasury administering its coinage rights. The Sydney Harbour Bridge appears here under that arrangement — an Australian landmark on a Niuean coin, issued by New Zealand authority. The geometry is entirely commercial.

The bridge itself opened in March 1932 after nine years of construction, at the time the world's widest long-span bridge. Its chief engineer, Ralph Freeman, had previously worked on the Tyne Bridge in Newcastle — a structural relationship that generated considerable controversy over which crossing influenced which.