This farm has been converted into a cheese factory especially for tourists.
Here you can get a demonstration (in a variety of languages) about how they make cheese.
Staff is dressed in traditional Dutch costumes, and the entrance is free.

Address:
Zeilenmakerspad 5, Zaandam
Web:
http://www.cheesefarms.com/en/catharina/

Opening hours:
7 days a week, 8am-6pm
Entrance fee:
Free