Abandoned WW2 bunkers

Casemate Type 623, Koudekerke, The Netherlands.

Radio Transmitter Bunker, Spaandam, The Netherlands.

Type 669 Heenschemolen, The Netherlands.

R636 Fire Control Post, Lekrinckoucke/Zuidcoote, France.

SK Observation Tower, Fliegerhorst, Belgium.

Type 703, Emminkhuizen, The Netherlands.

Type 583a / M 178. Fire Control Post. Heerenduin, Ijmuiden, The Netherlands.