Why Switzerland Built an Underground World Beneath the Alps

🇨🇭 Why Has Switzerland Built 370,000 Underground Shelters? Beneath Switzerland’s peaceful mountains, homes and even motorways lies an enormous hidden world of bunkers, secret tunnels and nuclear shelters—with enough protected spaces for almost every person in the country. From secret WWII fortresses and the incredible Sonnenberg motorway shelter to the 57 km Gotthard Base Tunnel, discover how Switzerland became a master of building underground—and the surprising reason it continues preparing these shelters today. But the biggest question remains: what exactly is Switzerland preparing for? 👍 Like, subscribe and join us for more incredible megaprojects, hidden engineering and construction stories. #Switzerland #Bunkers #Engineering #Megaprojects #Underground #MegaStructures #GotthardTunnel #HiddenWorld #engineering #ai