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.stichting-mega.nl/english/index.html for more info.
the inside of fort Uitermeer, we did the excursion with 40 people.
3 years ago it wasnt possible to go inside ..meters high stones and mud ... but they removed the loose parts and now its beautyfull to see !