The Museum card is a personal card that allows free entrance to about 400 museums in the Netherlands. As of 2016, the card costs €59.90 for adults, and is valid for one year. A discounted card is available for youth under age 19, costing €32.45 .In 2013, there were more than 900,000 Museum Cardholders. In 2011, over 23% of the visitors to the affiliated museums were Museum Cardholders . Continue reading... From Wikipedia, the free encyclopedia.