By bus
Using public transport to reach Kinderdijk can be time consuming so be sure to plan ahead via (http://www.9292ov.nl) Dutch and English. The name of the bus stop for Kinderdijk is "Kinderdijk Molen".
The best way is to take a train to Rotterdam Lombardijen station. This station is easily accessible from major cities in The Netherlands. When leaving the station, cross the big street and tram lines. The bus stop is visible after crossing the street. Take either bus 90 or 190 special, both operated by Arriva (http://www.arriva.nl). Bus 90 destination Utrecht operates every hour, 7 days a week. This bus will take you in about 45 minutes to Kinderdijk. Ask the bus driver to let you know when the stop comes for Kinderdijk. Both bus lines depart from Rotterdam Zuidplein metro station so alternatively you could take the bus from there.
By ship
You can also take the Waterbus (http://www.denieuwewaterb...) ferry from Rotterdam near Erasmusbrug or from Dordrecht on Merwekade. Get off at Ridderkerk, and change for a smaller ferry to Kinderdijk, which pier is around 1km from the windmills.A single trip should take you around 45 minutes to an hour, depending your point of departure and waiting time at Ridderkerk. Note that the Ridderkerk-Kinderdijk ferry service takes a long lunch break - from 10 a.m. to noon.