As part of broader efforts to ensure safety and preservation, bunkers—fortified defensive structures—continue to serve as critical shelters against missile attacks, aerial bombings, and other threats. Found worldwide, these impressive examples of military architecture have evolved beyond their original purpose. While some bunkers have fallen into ruin, others have been preserved as historical symbols or even transformed into unique tourist attractions.
Click through the gallery and explore the mysterious underground world of bunkers, where history and protection converge.