Superman has his Fortress of Solitude when he wants to get away from the headache of everyday humanity. But what price tag do you put on living underground in style while you wait out the next apocalyptic catastrophe? Apparently $17.5 million is the price for this little slice of underground peace of mind. While the rest of the world is being turned into groaning piles of barely recogniseable festering sores of your former friends and family, you can breathe clean air and snack on canapes and sip wine! Showing once again that you can get all of the safety that you can afford!