Switzerland keeps its vast Cold War-era civil defense bunker network, with some shelters now used for migrants

Switzerland, long known for military neutrality, has maintained an unusually extensive civil defense infrastructure that includes a large stock of nuclear-capable bomb shelters, according to NPR. Instead of scrapping much of the shelter network after the Cold War, the Swiss state kept the system in place, leaving the country with what the outlet describes as more than 370,000 nuclear bomb shelters.

The Swiss bunker network was built and expanded during periods when European governments were planning for worst-case nuclear and air-attack scenarios. Over time, the role of those shelters has shifted from an emergency plan for nuclear war to a broader civil defense asset, a status that has shaped how municipal and national authorities manage access, maintenance, and capacity.

NPR reports that some shelters are no longer devoted solely to disaster preparedness. In the current period described by the outlet, at least some facilities have been used to house migrants, placing the infrastructure at the intersection of emergency preparedness and an active migration-management challenge. The arrangement highlights how long-term public safety investments can be repurposed when other housing options are strained.

Switzerland’s approach to civil defense also reflects the country’s domestic policy framework for public protection and continuity of government during crises. The retention and upkeep of bunker capacity is part of a system in which sheltering is planned for civilians across the country rather than being limited to a narrow set of sites.

The NPR report emphasizes the scale of the bunker inventory, describing Switzerland as having more nuclear bunkers than any other country. That detail matters in understanding why Switzerland’s neutrality posture does not translate into a low level of civil defense readiness, and why authorities continue to treat shelter space as a persistent public resource.

Using bunkers for migration housing raises operational questions that Swiss authorities typically manage in civil defense contexts, including access rules, basic living conditions, and the administrative coordination required to keep facilities safe and functional for different populations. For communities hosting facilities, it also affects local planning and the practical delivery of services.

In the near term, the continued use of shelters for migrants could keep attention on the costs and governance of maintaining older public infrastructure, as well as on how quickly Switzerland can adapt civil defense capacity to contemporary needs. The issue also underscores how national security infrastructure can become part of domestic humanitarian and administrative policy when pressure points emerge.