| name | heritage designation | image | status | type | date completed | date end | date start | Website | date Start construction | city | administrative división | continent | Country | latitude (°) | longitude (°) | material | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Back yard |  | Abandoned/Ruins | Bunker | 1960 | website | 1960 | Grezzana | Veneto | Europe | Italy | 45.5166664124 | 11.0166664124 | Concrete, Steel | Map | |||
| Bilbao's Iron Ring |  | Abandoned/Ruins | Bunker | website | Bilbao | Basque Country | Europe | Spain | 39.9333343506 | -0.5666666627 | Concrete, Steel | Map | |||||
| Blockhaus d'Éperlecques | registered historic monument |  | Destroyed | Bunker | 1943 | 1944 | website | Éperlecques | Hauts-de-France | Europe | France | 50.8166656494 | 2.1833333969 | Concrete, Iron | Map | ||
| Boden Fortress Radio Bunker |  | Bunker | 1916 | 1975 | 1916 | website | 65.8333358765 | 21.6333332062 | Concrete, Steel | Map | |||||||
| Brécourt | Monument historique classé |  | Bunker | 1932 - 1944 | website | Équeurdreville-Hainneville | Normandy | Europe | France | 49.6519444400 | -1.6700000000 | Concrete | Map |