The Money Museum is located in the Royal Mint building, and museum visitors will have the opportunity to see coins being made. Not only that - you can also walk on coins there.

http://www.geldmuseum.nl/upload/52210_639_...9-geldvloer.jpg
The Coin Walk is covered with thousands of coins, carefully positioned on the ground. Carefully? Well, the Netherlands is a monarchy, and stepping on Her Majesty's face would ... So they make sure that all coins - kwartjes, stuivers, rijksdaalders, etc. - are "face down". The first layer of coins is done, now a second layer will be added.
This http://www.geldmuseum.nl/ is the Money Museum's website. Apart from information about the museum itself, you will also find (part of) the collection database online, with more to follow later.
Christian