To buy or not to buy?
City pass cards are a great way for travelers to save money on entrance fees to museums & historical sites, obtain free public transportation, and receive restaurant/retail discounts for a specific amount of time [24, 48, 72 & (sometimes) 96 consecutive hours] from the time the card is activated. Occasionally, you can score a 10% savings on the purchase price by pre-ordering your pass before your arrival in town. There are a few companies that offer the cards and lately variations of the discount cards are now offered–in the Netherlands, residents can buy an annual museum card for unlimited free or discounted entry to just about every museum. Depending on your length of stay and your interests determine if the card is worth your money.
Roam, Anyone? 