While I'm really excited that people are finally starting to use these types of structures, I'm very skeptical of this catching on and being a trend. Think of

While I'm really excited that people are finally starting to use these types of structures, I'm very skeptical of this catching on and being a trend. Think of all the unused potential space from the Cold War -- missile silos, underground bunkers, submarine pens, etc. All could be reused in some form, but most are completely abandoned or not for sale. Any ideas out there on how we could use some of these? Or how you would even go about doing that?