![Kelvedon Hatch secret nuclear bunker](https://a4.pbase.com/g3/78/700278/3/112759810.tVGnEmsL.jpg) Kelvedon Hatch secret nuclear bunker
by brianmicky
| ![Paddock Churchill's secret bunker](https://a4.pbase.com/g1/78/700278/3/128645080.H0VGdcnO.jpg) Paddock Churchill's secret bunker
by brianmicky
| ![Scotland's “Secret” Bunker](https://a4.pbase.com/g1/87/142487/3/131066497.CpKgUkJI.jpg) Scotland's “Secret” Bunker
by Paul
| ![Diefenbunker](https://a4.pbase.com/g3/04/266304/3/94500729.hh5evg0X.jpg) Diefenbunker
by wendy beard
| ![The Falkenhagen Complex](https://a4.pbase.com/g6/88/474988/3/80191222.R7WaR6I7.jpg) The Falkenhagen Complex
by Jakob Ehrensvärd
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![Drakelow Tunnels.](https://a4.pbase.com/g9/80/462980/3/158471461.e5Ns1ggB.jpg) Drakelow Tunnels.
by Derek Slater
| ![The missile base at Ploksciai](https://a4.pbase.com/g3/88/474988/3/96837453.eOdQfEji.jpg) The missile base at Ploksciai
by Jakob Ehrensvärd
| ![PCA-CHS 2018 Tour No. 5 -- West Virginia Grand Tour, June 1 to 3](https://a4.pbase.com/g10/21/783021/3/167878898.b6iJKW8y.jpg) PCA-CHS 2018 Tour No. 5 -- West Virginia Grand Tour, June 1 to 3
by A.G. Arao / noyphoto
| ![Abandoned backup power stations](https://a4.pbase.com/g6/88/474988/3/72813570.HqdQxSne.jpg) Abandoned backup power stations
by Jakob Ehrensvärd
|