Buy a one-hour or multi-day card at any metro or train station (or on the trams). Alternatively, rent a bike and join the locals as they speed about on two wheels (just watch out for trams if you’ve been coffeeshopping). Ride around Vondelpark, head out to the Amsterdamse Bos, or just get lost touring the pretty sidestreets. No one wears helmets, and scooters use the cycle lanes too, so be careful!