BBCNEWS The Travel Show June 4, 2024 04:38:00
In the city of lucerne, what was built as the largest shelter in the world lies hidden in the heart of the city. this kind of looks like any old tunnel you might find in europe, but we're in switzerland, so you might be forgiven for suspecting something else is going on, and this one is special. it's part of a huge bunker system that was designed to accommodate 20,000 people in the event of an emergency. theyjust slam shut big blast—proof doors at either end of the tunnel and suddenly, this stretch of road becomes a i.5km—long shelter. surrounding the tunnel is a vast seven—floor structu...