• Transferium parking in Alblasserdam from mid-March to November 1, with a free shuttle bus; the €9.75 parking needs an admission ticket
• WaterShuttle from Rotterdam reaches Kinderdijk in about 30 minutes, and bikes can come aboard
• Mill Code scavenger hunt comes with the ticket: pick up the sheet at the Visitor Center and bring a pencil

Kinderdijk is a UNESCO World Heritage site where 19 windmills and three pumping stations show how the Dutch have kept low-lying polders dry for centuries.

Kids can climb the stairs inside two museum mills, passing close to a revolving gear wheel, ride the tour boat past the mills, and solve the Mill Code scavenger hunt for a surprise at the gift shop.