I visited this site on a cold sunny morning in April 2013. I was there at 10am and followed a guide who explained in detail how the steam pumping station works. The 3D video showing a footage of the Wouda in operation is quite interesting as is the informative film on the small screen before turning to the cafeteria. The UNESCO certificate can be seen in the office only through the glass doors. Strangely enough it is quite hidden and I only saw it by chance. It is one of the most interesting industrial heritage sites I've been to and perfect to combine with Schokland and/or the Rietveld Schroder House.