this is built underneath the greenbrier resort in west virginia.ee this especially on livehe tv, "today" show given unique access to take you here. this was, indeed, one of the best kept secrets in the wld because this is where members of congress would have come if there was ever a mushroom cloud overashington. still today it's hard to see beneath this nondescript neighborhood. behind walls five-feet thick, and just past the perfect cover, the greenbrier rest. the luxury hidde in the hills, four hours from washington, about as far as you will find from the fear of nuclear ll t, a last resort for cold war congress. seems like back when kids like meere told to drop and cover, our leaders adopted more of a bunker mentality. >> our very own luxury bomb shelter. >> sealedut of sight, a whole underground city, so secretive, even today tour groups first have to turnover their cell phones, but our cameras were allowed in. with congress closed in, here they had an infirmry, command center and dorm root'. >> a crazy tidea, duke and duchess of windsor are ha