Today we did the yearly excursion from the military herritage foundation, we visited 4 forts (from of the 42) of the defence works of Amsterdam... look at our website
http://www.stelling-amsterdam.org/english/ for more info.
after Weesp we went to fort Uitermeer, another tower type fort, the military tried to blow it with explosives in the '50s... here the left over of it and the waterworks they restore !