Like the Montelbaanstoren, the Munttoren is one of the few remaining bits of the 1490 city wall. In 1672 and 1673 when the French occupied Amsterdam it was converted into the city's mint, and the name Munttoren has stuck to this day. It is now home to an upmarket gift shop - original Delftware - with very snotty staff. Don't bother to go in unless you look like you have a fortune to spend.