Air-raid shelter 防空洞
（重定向自Morrison shelter）
![Air-raid shelter in Tateyama, Nagasaki, Nagasaki.](/Images/godic/202501/28/Tateyama_air-raid_shelter5936.JPG")
![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.](/Images/godic/202501/28/Kleine_Berlin_Trieste_15937.jpg")
![Single-person air raid shelter in Germany on display in an aviation museum](/Images/godic/202501/28/Bunker04_HLFM015937.JPG")
![The Hochbunker in Trier](/Images/godic/202501/28/Hochbunker_von_Trier5937.jpg")
Air-raid shelters, also known as bomb 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 (but many have been successfully used as defensive structures in such situations).