Andy Torbert inside a German bunker on Walcheren Island with Bunker Foundation volunteer Marc Machielse. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_45.jpg
Andy Torbert entering a German bunker on Walcheren Island with Bunker Foundation volunteer Marc Machielse. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_24.jpg
Andy Torbert stands outside a damn on the Ijssel Line. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_19.jpg
Andy Torbert inside a German bunker on Walcheren Island with Bunker Foundation volunteer Marc Machielse. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_27.jpg
Andy Torbert outside German bunker on Walcheren Island. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_26.jpg
Andy Torbert stands outside a damn on the Ijssel Line. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_22.jpg
Bart Gielen inside Fort Honswijk. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_36.jpg
Bart Gielen outside Fort Honswijk. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_37.jpg
Bart Gielen inside Fort Honswijk with historic engineer, Martin Ijdo. (National Geographic)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_09.jpg
Bart Gielen inside Fort Honswijk. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_35.jpg
Andy Torbert stands outside a damn on the Ijssel Line. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_21.jpg
Bart Gielen inside Fort Honswijk with historic engineer, Martin Ijdo. (National Geographic)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_08.jpg
Bart Gielen inside Fort Honswijk. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_11.jpg
Bart Gielen inside Fort Honswijk with historic engineer, Martin Ijdo. (National Geographic)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_04.jpg
Bart Gielen inside Fort Honswijk with historic engineer, Martin Ijdo. (National Geographic)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_06.jpg
Bart Gielen inside Fort Honswijk with historic engineer, Martin Ijdo. (National Geographic)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_07.jpg
Bart Gielen outside Fort Honswijk. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_17.jpg
Bart Gielen inside Fort Honswijk. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_28.jpg
Bart Gielen inside Fort Honswijk. (National Geographic/Ciaran Henry)Episode: #4 "The Netherlands"Air Date 09/14/2024104_Netherlands_DefendingEurope_14.jpg
