Yes, it’s Switzerland

Switzerland has a unique and extensive network of bunkers designed to shelter its entire population in the event of a disaster. This initiative began during the Cold War, ensuring that every Swiss citizen has access to a secure shelter. Bunkers are found in private homes, public buildings, and large community facilities, all designed to provide protection in case of nuclear or other emergencies. These shelters, managed by the Swiss Civil Protection system, are equipped with ventilation systems, essential supplies, and resources to support people for extended periods. This comprehensive infrastructure makes Switzerland exceptionally prepared for national emergencies.