It's always interesting to find a Cold War Relic. A Wisconsin family recently shared with the world the bomb shelter in its back yard. And while this one seems silly, you have to appreciate how serious the nuclear threat was back then. And yes, there were contingency plans from every branch of government to function post-nuclear attack(hysterically lampooned in Dr. Strangelove). I was born in 1961 and I don't recall how old I was when I became aware of the nuclear threat, but I was quite young. Baby boomers were the first generation born into a threat of global destruction.
My children were born just four and six years after the fall of the Berlin Wall, yet the Cold War seems ancient history to them. They grew up as the terrorism threat became a reality for the United States. Planning for SCOTUS or any other branch of government to take shelter from Armageddon is impossible for them to grasp. In fact, the concept of mutual assured destruction is impossible for them to grasp.
But in 1956, it was very real. And yes, that the hotel is still standing by is funny.