The Muntplein (Mint Square) is a square in the centre of Amsterdam. The square is in fact a bridge — the widest bridge in Amsterdam — that crosses the Singel canal at the point where it flows into the Amstel river. All bridges in Amsterdam are numbered, and the Muntplein carries the number 1. The name "Muntplein" dates from 1917. The square was originally known as Schapenplein ("sheep square") and, from 1877 to 1917, as Sophiaplein (after Queen Sophia, first wife of William III).