Delft
Delft is a charming town, famous for its blue and white ceramic work, and hometown of Johannes Vermeer. Kids will like wandering around here, so spend time walking around the streets and canals, lined with old houses. Some houses have front doors that open right onto the water.
Nieuwe Kerk - The Gothic-style tower of the Nieuwe Kerk (New Church) is incredible. It's a huge 15th century stone tower, sitting on marshland, that doesn't lean at all. Climb up the tower for a bird's eye view of the town.
Central Market - Thursday is market day in the square in front of the Stadhuis. There are also free carillon concerts in the summer.
Canal cruise - Take a 50 min. cruise through old city Delft, and find out about Vermeer and the history of Delft. Departures from Koornmarkt, every hour, March to October.