This fort, built in polygonal system, was once very powerful in combat. It is fully covered with greenery, therefore it is almost invisible!
Wikipedia (Dutch) http://nl.wikipedia.org/wiki/Fort_bij_Rijnauwen
Official website http://www.fortrijnauwen.nl/
Phone +31 30 236 0020
Address Vossegatsedijk 5, 3981 Bunnik, Netherlands
Coordinates 52°4'30.36" N 5°10'31.915" E