What is Bunkerdag?

2019 sees the sixth edition of Bunkerdag. The idea behind the event is that, for one day a year, as many bunkers as possible are opened to the public. Visitors not only have the opportunity to become more acquainted with this unique part of European heritage but also get to experience how the Atlantic Wall's construction has affected inhabitants and how radically this line of defence has changed the face of our coastline.

Want to find out more about the Atlantic Wall?

Author and publisher Geert-Jan Mellink produced De Atlantikwall in Nederland en België, a handy and uncomplicated guide to bunkers in The Netherlands and Belgium. The 100+ paged book contains descriptions and photographs of the +/-80 most important Atlantic Wall locations as well as the history of the Atlantic Wall as a whole and specific engineering of the bunkers. Spectacular drone photography and many historical images in this comprehensive guide make it an historical gem not to be missed!

De Atlantikwall in Nederland en België (in Dutch) can be ordered via, or directly via Geert-Jan Mellink himself ( The guide is also available during Bunkerdag at selected vendor locations. Price: € 12.95.