It looks like a Science-Fiction Underground Metropolis.
With this mindset, Switzerland has avoided war for 500 years.
If there were an extinction event, the important question is : would Switzerland notice?
I toured there when I was in Europe in the military. It was such a wonderful place I never wanted to leave. It seemed to me like this is the way sane people would structure their existence.
In countries with average IQs of 98, the locals are always puzzled why the Swiss would expend so much energy on all this. They knit their tiny brows in puzzlement as they take short sips on the can of malt liquor clutched in their ham fist and try to form thoughts - with mixed results.
The reason is that the Swiss can walk and chew gum at the same time and they have been able to do so for well over 500 years. When you can't walk and chew gum at the same time it makes it difficult to prepare for things when you can't foresee developments more than 30 seconds into the future and your memory can only retrieve things that happened less than 15 minutes in the past.