London deep-level shelters
The London deep-level shelters are eight deep-level air-raid shelters that were built under London Underground stations during World War II.
An upper level of one of the Belsize Park tunnels.
One of the entrances to the Stockwell shelter now decorated as a war memorial
One of the entrances to Clapham South in 2009. It has since been incorporated into a new residential development.
Air raid shelters are structures for the protection of non-combatants as well as combatants against enemy attacks from the air. They are similar to bunkers in many regards, although they are not designed to defend against ground attack.
One of the London deep-level shelters, in Belsize Park
Kleines Berlin ('Little Berlin' in German) is the complex of underground air-raid tunnels dating to World War II, which still exists in Trieste, Italy
Single-person air raid shelter on display at the Günter Leonhardt aviation museum near Hannover, Germany
The Hochbunker in Trier