Switzerland's Secret Underground Network: How the Country's Cold War Legacy Became a Refuge for Migrants. As the threat of nuclear war receded with the end of the Cold War, many countries dismantled their extensive networks of bomb shelters. However, Switzerland took a different approach, continuing to build and maintain an impressive underground infrastructure. Today, the country boasts an astonishing 370,000 nuclear bomb shelters, a testament to its long-standing commitment to disaster preparedness and national security. But what was once a relic of a bygone era has taken on a new purpose: providing a safe haven for migrants, who are now being housed in some of these long-abandoned shelters.
Instead of scrapping its network of bomb shelters after the Cold War, Switzerland kept building them. The country has more than 370,000 nuclear bomb shelters. Some are now used to house migrants.